Module Name:    src
Committed By:   rillig
Date:           Sun Nov 19 21:47:52 UTC 2023

Modified Files:
        src/usr.bin/make/unit-tests: cmdline-undefined.mk comment.mk
            cond-cmp-string.mk cond-cmp-unary.mk cond-eof.mk
            cond-func-defined.exp cond-func-defined.mk cond-func-empty.mk
            cond-func-exists.mk cond-func.mk cond-late.mk cond-short.mk
            cond-token-number.mk cond-token-plain.exp cond-token-plain.mk
            cond-token-string.exp cond-token-string.mk cond-token-var.mk
            dep-var.mk deptgt-makeflags.mk deptgt.mk directive-else.mk
            directive-for-empty.mk directive-for-errors.mk
            directive-for-escape.mk directive-for-if.mk directive-ifmake.mk
            lint.mk opt-debug-file.mk opt-debug-jobs.mk opt-debug-lint.mk
            opt-debug-var.mk parse-var.mk sh-dots.mk var-op-assign.mk
            var-op-default.mk var-op-expand.mk var-recursive.mk
            var-scope-cmdline.mk var-scope-local.mk varmod-assign.mk
            varmod-defined.mk varmod-edge.mk varmod-gmtime.mk varmod-ifelse.exp
            varmod-ifelse.mk varmod-indirect.mk varmod-l-name-to-value.mk
            varmod-localtime.mk varmod-loop-varname.mk varmod-loop.mk
            varmod-match-escape.mk varmod-match.mk varmod-range.mk
            varmod-subst-regex.mk varmod-sysv.mk varmod-to-separator.mk
            varmod-undefined.mk varmod.mk varname-empty.mk varname.mk
            varparse-errors.mk varparse-mod.mk varparse-undef-partial.mk

Log Message:
tests/make: replace 'variable expression' with 'expression'

Each expression is based on a variable, there's no need for the
verbosity.  The wording in make's diagnostics will be changed in a
follow-up commit.


To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/usr.bin/make/unit-tests/cmdline-undefined.mk \
    src/usr.bin/make/unit-tests/sh-dots.mk \
    src/usr.bin/make/unit-tests/var-op-default.mk \
    src/usr.bin/make/unit-tests/var-scope-cmdline.mk \
    src/usr.bin/make/unit-tests/varparse-undef-partial.mk
cvs rdiff -u -r1.5 -r1.6 src/usr.bin/make/unit-tests/comment.mk \
    src/usr.bin/make/unit-tests/cond-cmp-unary.mk \
    src/usr.bin/make/unit-tests/cond-eof.mk \
    src/usr.bin/make/unit-tests/opt-debug-jobs.mk \
    src/usr.bin/make/unit-tests/var-recursive.mk \
    src/usr.bin/make/unit-tests/varmod-loop-varname.mk
cvs rdiff -u -r1.17 -r1.18 src/usr.bin/make/unit-tests/cond-cmp-string.mk \
    src/usr.bin/make/unit-tests/varmod-edge.mk \
    src/usr.bin/make/unit-tests/varmod-ifelse.exp
cvs rdiff -u -r1.7 -r1.8 src/usr.bin/make/unit-tests/cond-func-defined.exp \
    src/usr.bin/make/unit-tests/cond-token-var.mk \
    src/usr.bin/make/unit-tests/deptgt-makeflags.mk \
    src/usr.bin/make/unit-tests/var-scope-local.mk \
    src/usr.bin/make/unit-tests/varmod-l-name-to-value.mk \
    src/usr.bin/make/unit-tests/varmod-subst-regex.mk
cvs rdiff -u -r1.10 -r1.11 src/usr.bin/make/unit-tests/cond-func-defined.mk \
    src/usr.bin/make/unit-tests/cond-token-string.exp \
    src/usr.bin/make/unit-tests/var-op-assign.mk
cvs rdiff -u -r1.22 -r1.23 src/usr.bin/make/unit-tests/cond-func-empty.mk
cvs rdiff -u -r1.6 -r1.7 src/usr.bin/make/unit-tests/cond-func-exists.mk \
    src/usr.bin/make/unit-tests/directive-for-errors.mk
cvs rdiff -u -r1.13 -r1.14 src/usr.bin/make/unit-tests/cond-func.mk \
    src/usr.bin/make/unit-tests/varmod-localtime.mk \
    src/usr.bin/make/unit-tests/varname.mk
cvs rdiff -u -r1.4 -r1.5 src/usr.bin/make/unit-tests/cond-late.mk \
    src/usr.bin/make/unit-tests/lint.mk
cvs rdiff -u -r1.21 -r1.22 src/usr.bin/make/unit-tests/cond-short.mk \
    src/usr.bin/make/unit-tests/directive-for-escape.mk
cvs rdiff -u -r1.9 -r1.10 src/usr.bin/make/unit-tests/cond-token-number.mk \
    src/usr.bin/make/unit-tests/opt-debug-file.mk \
    src/usr.bin/make/unit-tests/varname-empty.mk \
    src/usr.bin/make/unit-tests/varparse-errors.mk
cvs rdiff -u -r1.19 -r1.20 src/usr.bin/make/unit-tests/cond-token-plain.exp
cvs rdiff -u -r1.18 -r1.19 src/usr.bin/make/unit-tests/cond-token-plain.mk \
    src/usr.bin/make/unit-tests/var-op-expand.mk
cvs rdiff -u -r1.8 -r1.9 src/usr.bin/make/unit-tests/cond-token-string.mk \
    src/usr.bin/make/unit-tests/dep-var.mk \
    src/usr.bin/make/unit-tests/directive-else.mk \
    src/usr.bin/make/unit-tests/parse-var.mk \
    src/usr.bin/make/unit-tests/varmod-range.mk \
    src/usr.bin/make/unit-tests/varmod-undefined.mk \
    src/usr.bin/make/unit-tests/varmod.mk
cvs rdiff -u -r1.14 -r1.15 src/usr.bin/make/unit-tests/deptgt.mk
cvs rdiff -u -r1.2 -r1.3 src/usr.bin/make/unit-tests/directive-for-empty.mk \
    src/usr.bin/make/unit-tests/directive-for-if.mk \
    src/usr.bin/make/unit-tests/opt-debug-var.mk
cvs rdiff -u -r1.11 -r1.12 src/usr.bin/make/unit-tests/directive-ifmake.mk \
    src/usr.bin/make/unit-tests/varmod-match-escape.mk
cvs rdiff -u -r1.15 -r1.16 src/usr.bin/make/unit-tests/opt-debug-lint.mk \
    src/usr.bin/make/unit-tests/varmod-assign.mk \
    src/usr.bin/make/unit-tests/varmod-defined.mk \
    src/usr.bin/make/unit-tests/varmod-sysv.mk
cvs rdiff -u -r1.20 -r1.21 src/usr.bin/make/unit-tests/varmod-gmtime.mk
cvs rdiff -u -r1.24 -r1.25 src/usr.bin/make/unit-tests/varmod-ifelse.mk
cvs rdiff -u -r1.12 -r1.13 src/usr.bin/make/unit-tests/varmod-indirect.mk \
    src/usr.bin/make/unit-tests/varmod-to-separator.mk
cvs rdiff -u -r1.23 -r1.24 src/usr.bin/make/unit-tests/varmod-loop.mk
cvs rdiff -u -r1.16 -r1.17 src/usr.bin/make/unit-tests/varmod-match.mk
cvs rdiff -u -r1.1 -r1.2 src/usr.bin/make/unit-tests/varparse-mod.mk

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/usr.bin/make/unit-tests/cmdline-undefined.mk
diff -u src/usr.bin/make/unit-tests/cmdline-undefined.mk:1.3 src/usr.bin/make/unit-tests/cmdline-undefined.mk:1.4
--- src/usr.bin/make/unit-tests/cmdline-undefined.mk:1.3	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cmdline-undefined.mk	Sun Nov 19 21:47:52 2023
@@ -1,6 +1,6 @@
-# $NetBSD: cmdline-undefined.mk,v 1.3 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: cmdline-undefined.mk,v 1.4 2023/11/19 21:47:52 rillig Exp $
 #
-# Tests for undefined variable expressions in the command line.
+# Tests for undefined expressions in the command line.
 
 all:
 	# When the command line is parsed, variable assignments using the
Index: src/usr.bin/make/unit-tests/sh-dots.mk
diff -u src/usr.bin/make/unit-tests/sh-dots.mk:1.3 src/usr.bin/make/unit-tests/sh-dots.mk:1.4
--- src/usr.bin/make/unit-tests/sh-dots.mk:1.3	Sun Oct 25 22:04:24 2020
+++ src/usr.bin/make/unit-tests/sh-dots.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: sh-dots.mk,v 1.3 2020/10/25 22:04:24 rillig Exp $
+# $NetBSD: sh-dots.mk,v 1.4 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the special shell command line "...", which does not run the
 # commands below it but appends them to the list of commands that are run
@@ -29,8 +29,8 @@ commented: .IGNORE
 	...	# Run the below commands later
 	@echo commented delayed ${.TARGET}
 
-# The dots don't have to be written literally, they can also come from a
-# variable expression.
+# The dots don't have to be written literally, they can also come from an
+# expression.
 indirect:
 	@echo indirect regular
 	${:U...}
Index: src/usr.bin/make/unit-tests/var-op-default.mk
diff -u src/usr.bin/make/unit-tests/var-op-default.mk:1.3 src/usr.bin/make/unit-tests/var-op-default.mk:1.4
--- src/usr.bin/make/unit-tests/var-op-default.mk:1.3	Mon Dec  7 21:35:43 2020
+++ src/usr.bin/make/unit-tests/var-op-default.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: var-op-default.mk,v 1.3 2020/12/07 21:35:43 rillig Exp $
+# $NetBSD: var-op-default.mk,v 1.4 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the ?= variable assignment operator, which only assigns
 # if the variable is still undefined.
@@ -61,8 +61,8 @@ VAR.${:Uparam}?=	not used
 
 # Now demonstrate that the variable name is indeed expanded exactly once.
 # This is tricky to measure correctly since there are many inconsistencies
-# in and around the code that expands variable expressions in the various
-# places where variable expressions can occur.  If in doubt, enable the
+# in and around the code that expands expressions in the various
+# places where expressions can occur.  If in doubt, enable the
 # following debug flags to see what happens:
 #.MAKEFLAGS: -dcpv
 EXPAND_NAME=		EXPAND.$$$$	# The full variable name is EXPAND.$$
Index: src/usr.bin/make/unit-tests/var-scope-cmdline.mk
diff -u src/usr.bin/make/unit-tests/var-scope-cmdline.mk:1.3 src/usr.bin/make/unit-tests/var-scope-cmdline.mk:1.4
--- src/usr.bin/make/unit-tests/var-scope-cmdline.mk:1.3	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/var-scope-cmdline.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: var-scope-cmdline.mk,v 1.3 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: var-scope-cmdline.mk,v 1.4 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for variables specified on the command line.
 #
@@ -55,7 +55,7 @@
 # temporary loop variable after finishing the loop.  It was probably not
 # intended back then that a side effect of this seemingly simple change was
 # that both global and cmdline variables could now be undefined at will as a
-# side effect of evaluating a variable expression.  As of 2021-02-23, this is
+# side effect of evaluating an expression.  As of 2021-02-23, this is
 # still possible.
 #
 # Most cmdline variables are set at the very beginning, when parsing the
Index: src/usr.bin/make/unit-tests/varparse-undef-partial.mk
diff -u src/usr.bin/make/unit-tests/varparse-undef-partial.mk:1.3 src/usr.bin/make/unit-tests/varparse-undef-partial.mk:1.4
--- src/usr.bin/make/unit-tests/varparse-undef-partial.mk:1.3	Wed Nov  4 05:10:01 2020
+++ src/usr.bin/make/unit-tests/varparse-undef-partial.mk	Sun Nov 19 21:47:52 2023
@@ -1,7 +1,7 @@
-# $NetBSD: varparse-undef-partial.mk,v 1.3 2020/11/04 05:10:01 rillig Exp $
+# $NetBSD: varparse-undef-partial.mk,v 1.4 2023/11/19 21:47:52 rillig Exp $
 
 # When an undefined variable is expanded in a ':=' assignment, only the
-# initial '$' of the variable expression is skipped by the parser, while
+# initial '$' of the expression is skipped by the parser, while
 # the remaining expression is evaluated.  In edge cases this can lead to
 # a completely different interpretation of the partially expanded text.
 
@@ -15,7 +15,7 @@ PARAM=	:Q
 # parser (see Var_Subst, the Buf_AddByte in the else branch) and the rest
 # of the expression is expanded as usual.
 #
-# The resulting variable expression is ${VAR.:Q}, which means that the
+# The resulting expression is ${VAR.:Q}, which means that the
 # interpretation of the ":Q" has changed from being part of the variable
 # name to being a variable modifier.  This is a classical code injection.
 EVAL:=	${LIST}
@@ -37,7 +37,7 @@ ${:UVAR.\:Q}=	var-dot with parameter :Q
 # In contrast to the previous line, evaluating the original LIST again now
 # produces a different result since the variable named "VAR.:Q" is now
 # defined.  It is expanded as usual, interpreting the ":Q" as part of the
-# variable name, as would be expected from reading the variable expression.
+# variable name, as would be expected from reading the expression.
 EVAL:=	${LIST}
 .if ${EVAL} != "defined  var-dot with parameter :Q end"
 .  error ${EVAL}

Index: src/usr.bin/make/unit-tests/comment.mk
diff -u src/usr.bin/make/unit-tests/comment.mk:1.5 src/usr.bin/make/unit-tests/comment.mk:1.6
--- src/usr.bin/make/unit-tests/comment.mk:1.5	Sun May  8 06:51:27 2022
+++ src/usr.bin/make/unit-tests/comment.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: comment.mk,v 1.5 2022/05/08 06:51:27 rillig Exp $
+# $NetBSD: comment.mk,v 1.6 2023/11/19 21:47:52 rillig Exp $
 #
 # Demonstrate how comments are written in makefiles.
 
@@ -55,7 +55,7 @@ VAR=	\#		# Both in the assignment.
 
 # Since 2012-03-24 the variable modifier :[#] does not need to be escaped.
 # To keep the parsing code simple, any "[#" does not start a comment, even
-# outside of a variable expression.
+# outside of an expression.
 WORDS=	${VAR:[#]} [#
 .if ${WORDS} != "1 [#"
 .  error
Index: src/usr.bin/make/unit-tests/cond-cmp-unary.mk
diff -u src/usr.bin/make/unit-tests/cond-cmp-unary.mk:1.5 src/usr.bin/make/unit-tests/cond-cmp-unary.mk:1.6
--- src/usr.bin/make/unit-tests/cond-cmp-unary.mk:1.5	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-cmp-unary.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-cmp-unary.mk,v 1.5 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: cond-cmp-unary.mk,v 1.6 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for unary comparisons in .if conditions, that is, comparisons with
 # a single operand.  If the operand is a number, it is compared to zero,
@@ -24,7 +24,7 @@
 .  error
 .endif
 
-# The empty string may come from a variable expression.
+# The empty string may come from an expression.
 #
 # XXX: As of 2023-06-01, this empty string is interpreted "as a number" in
 # EvalTruthy, which is plain wrong.  The bug is in TryParseNumber.
@@ -32,13 +32,13 @@
 .  error
 .endif
 
-# A variable expression that is not surrounded by quotes is interpreted
+# An expression that is not surrounded by quotes is interpreted
 # as a number if possible, otherwise as a string.
 .if ${:U0}
 .  error
 .endif
 
-# A non-zero number from a variable expression evaluates to true.
+# A non-zero number from an expression evaluates to true.
 .if !${:U12345}
 .  error
 .endif
Index: src/usr.bin/make/unit-tests/cond-eof.mk
diff -u src/usr.bin/make/unit-tests/cond-eof.mk:1.5 src/usr.bin/make/unit-tests/cond-eof.mk:1.6
--- src/usr.bin/make/unit-tests/cond-eof.mk:1.5	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-eof.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-eof.mk,v 1.5 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: cond-eof.mk,v 1.6 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for parsing the end of '.if' conditions, which are represented as the
 # token TOK_EOF.
@@ -9,7 +9,7 @@ SIDE_EFFECT2=	${:!echo 'side effect 2' 1
 
 # In the following conditions, ${SIDE_EFFECT} is the position of the first
 # parse error.  Before cond.c 1.286 from 2021-12-10, it was always fully
-# evaluated, even if it was not necessary to expand the variable expression.
+# evaluated, even if it was not necessary to expand the expression.
 # These syntax errors are an edge case that does not occur during normal
 # operation.  Still, it is easy to avoid evaluating these expressions, just in
 # case they have side effects.
Index: src/usr.bin/make/unit-tests/opt-debug-jobs.mk
diff -u src/usr.bin/make/unit-tests/opt-debug-jobs.mk:1.5 src/usr.bin/make/unit-tests/opt-debug-jobs.mk:1.6
--- src/usr.bin/make/unit-tests/opt-debug-jobs.mk:1.5	Thu Nov 12 21:54:52 2020
+++ src/usr.bin/make/unit-tests/opt-debug-jobs.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: opt-debug-jobs.mk,v 1.5 2020/11/12 21:54:52 rillig Exp $
+# $NetBSD: opt-debug-jobs.mk,v 1.6 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the -dj command line option, which adds debug logging about
 # running jobs in multiple shells.
@@ -11,7 +11,7 @@
 
 all:
 	# Only the actual command is logged.
-	# To see the evaluation of the variable expressions, use -dv.
+	# To see the evaluation of the expressions, use -dv.
 	: ${:Uexpanded} expression
 
 	# Undefined variables expand to empty strings.
Index: src/usr.bin/make/unit-tests/var-recursive.mk
diff -u src/usr.bin/make/unit-tests/var-recursive.mk:1.5 src/usr.bin/make/unit-tests/var-recursive.mk:1.6
--- src/usr.bin/make/unit-tests/var-recursive.mk:1.5	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/var-recursive.mk	Sun Nov 19 21:47:52 2023
@@ -1,6 +1,6 @@
-# $NetBSD: var-recursive.mk,v 1.5 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: var-recursive.mk,v 1.6 2023/11/19 21:47:52 rillig Exp $
 #
-# Tests for variable expressions that refer to themselves and thus
+# Tests for expressions that refer to themselves and thus
 # cannot be evaluated.
 
 TESTS=	direct indirect conditional short target
Index: src/usr.bin/make/unit-tests/varmod-loop-varname.mk
diff -u src/usr.bin/make/unit-tests/varmod-loop-varname.mk:1.5 src/usr.bin/make/unit-tests/varmod-loop-varname.mk:1.6
--- src/usr.bin/make/unit-tests/varmod-loop-varname.mk:1.5	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/varmod-loop-varname.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-loop-varname.mk,v 1.5 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: varmod-loop-varname.mk,v 1.6 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the first part of the variable modifier ':@var@...@', which
 # contains the variable name to use during the loop.
@@ -112,7 +112,7 @@ RES3=		3
 #
 # As of 2020-10-18, the :@ modifier is implemented by actually setting a
 # variable in the scope of the expression and deleting it again after the
-# loop.  This is different from the .for loops, which substitute the variable
+# loop.  This is different from the .for loops, which substitute the
 # expression with ${:Uvalue}, leading to different unwanted side effects.
 #
 # To make the behavior more predictable, the :@ modifier should restore the

Index: src/usr.bin/make/unit-tests/cond-cmp-string.mk
diff -u src/usr.bin/make/unit-tests/cond-cmp-string.mk:1.17 src/usr.bin/make/unit-tests/cond-cmp-string.mk:1.18
--- src/usr.bin/make/unit-tests/cond-cmp-string.mk:1.17	Tue Mar 28 14:38:29 2023
+++ src/usr.bin/make/unit-tests/cond-cmp-string.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-cmp-string.mk,v 1.17 2023/03/28 14:38:29 rillig Exp $
+# $NetBSD: cond-cmp-string.mk,v 1.18 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for string comparisons in .if conditions.
 
@@ -20,11 +20,11 @@
 .  error
 .endif
 
-# The left-hand side of the comparison requires that any variable expression
+# The left-hand side of the comparison requires that any expression
 # is defined.
 #
 # The variable named "" is never defined, nevertheless it can be used as a
-# starting point for variable expressions.  Applying the :U modifier to such
+# starting point for expressions.  Applying the :U modifier to such
 # an undefined expression turns it into a defined expression.
 #
 # See ApplyModifier_Defined and DEF_DEFINED.
@@ -63,13 +63,13 @@
 .  error
 .endif
 
-# A variable expression can be enclosed in double quotes.
+# An expression can be enclosed in double quotes.
 .if ${:Uword} != "${:Uword}"
 .  error
 .endif
 
 # Between 2003-01-01 (maybe even earlier) and 2020-10-30, adding one of the
-# characters " \t!=><" directly after a variable expression resulted in a
+# characters " \t!=><" directly after an expression resulted in a
 # "Malformed conditional", even though the string was well-formed.
 .if ${:Uword } != "${:Uword} "
 .  error
@@ -89,12 +89,12 @@
 .  error
 .endif
 
-# Adding another variable expression to the string literal works though.
+# Adding another expression to the string literal works though.
 .if ${:Uword} != "${:Uwo}${:Urd}"
 .  error
 .endif
 
-# Adding a space at the beginning of the quoted variable expression works
+# Adding a space at the beginning of the quoted expression works
 # though.
 .if ${:U word } != " ${:Uword} "
 .  error
Index: src/usr.bin/make/unit-tests/varmod-edge.mk
diff -u src/usr.bin/make/unit-tests/varmod-edge.mk:1.17 src/usr.bin/make/unit-tests/varmod-edge.mk:1.18
--- src/usr.bin/make/unit-tests/varmod-edge.mk:1.17	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/varmod-edge.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-edge.mk,v 1.17 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: varmod-edge.mk,v 1.18 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for edge cases in variable modifiers.
 #
@@ -16,7 +16,7 @@ MOD.M-paren=	${INP.M-paren:M(*)}
 EXP.M-paren=	(parentheses) ()
 
 # The first closing brace matches the opening parenthesis.
-# The second closing brace actually ends the variable expression.
+# The second closing brace actually ends the expression.
 #
 # XXX: This is unexpected but rarely occurs in practice.
 TESTS+=		M-mixed
@@ -40,7 +40,7 @@ EXP.M-unescape=	\(\{}\):
 # as open_parens + open_braces == closing_parens + closing_braces. This
 # means that ( and } form a matching pair.
 #
-# Nested variable expressions are not parsed as such. Instead, only the
+# Nested expressions are not parsed as such. Instead, only the
 # parentheses and braces are counted. This leads to a parse error since
 # the nested expression is not "${:U*)}" but only "${:U*)", which is
 # missing the closing brace. The expression is evaluated anyway.
Index: src/usr.bin/make/unit-tests/varmod-ifelse.exp
diff -u src/usr.bin/make/unit-tests/varmod-ifelse.exp:1.17 src/usr.bin/make/unit-tests/varmod-ifelse.exp:1.18
--- src/usr.bin/make/unit-tests/varmod-ifelse.exp:1.17	Sat Jul  1 09:06:34 2023
+++ src/usr.bin/make/unit-tests/varmod-ifelse.exp	Sun Nov 19 21:47:52 2023
@@ -1,5 +1,5 @@
-make: Bad conditional expression 'variable expression == "literal"' in 'variable expression == "literal"?bad:bad'
-make: "varmod-ifelse.mk" line 28: Malformed conditional (${${:Uvariable expression} == "literal":?bad:bad})
+make: Bad conditional expression 'bare words == "literal"' in 'bare words == "literal"?bad:bad'
+make: "varmod-ifelse.mk" line 28: Malformed conditional (${${:Ubare words} == "literal":?bad:bad})
 make: Bad conditional expression ' == ""' in ' == ""?bad-assign:bad-assign'
 make: Bad conditional expression ' == ""' in ' == ""?bad-cond:bad-cond'
 make: "varmod-ifelse.mk" line 46: Malformed conditional (${${UNDEF} == "":?bad-cond:bad-cond})

Index: src/usr.bin/make/unit-tests/cond-func-defined.exp
diff -u src/usr.bin/make/unit-tests/cond-func-defined.exp:1.7 src/usr.bin/make/unit-tests/cond-func-defined.exp:1.8
--- src/usr.bin/make/unit-tests/cond-func-defined.exp:1.7	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-func-defined.exp	Sun Nov 19 21:47:52 2023
@@ -1,6 +1,6 @@
 make: "cond-func-defined.mk" line 24: Missing closing parenthesis for defined()
 make: "cond-func-defined.mk" line 34: Missing closing parenthesis for defined()
-make: "cond-func-defined.mk" line 47: In .for loops, variable expressions for the loop variables are
+make: "cond-func-defined.mk" line 47: In .for loops, expressions for the loop variables are
 make: "cond-func-defined.mk" line 49: substituted at evaluation time.  There is no actual variable
 make: "cond-func-defined.mk" line 51: involved, even if it feels like it.
 make: Fatal errors encountered -- cannot continue
Index: src/usr.bin/make/unit-tests/cond-token-var.mk
diff -u src/usr.bin/make/unit-tests/cond-token-var.mk:1.7 src/usr.bin/make/unit-tests/cond-token-var.mk:1.8
--- src/usr.bin/make/unit-tests/cond-token-var.mk:1.7	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-token-var.mk	Sun Nov 19 21:47:52 2023
@@ -1,11 +1,11 @@
-# $NetBSD: cond-token-var.mk,v 1.7 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: cond-token-var.mk,v 1.8 2023/11/19 21:47:52 rillig Exp $
 #
-# Tests for variable expressions in .if conditions.
+# Tests for expressions in .if conditions.
 #
-# Note the fine distinction between a variable and a variable expression.
-# A variable has a name and a value.  To access the value, one writes a
-# variable expression of the form ${VAR}.  This is a simple variable
-# expression.  Variable expressions can get more complicated by adding
+# Note the fine distinction between a variable and an expression.
+# A variable has a name and a value.  To access the value, one writes an
+# expression of the form ${VAR}.  This is a simple
+# expression.  Expressions can get more complicated by adding
 # variable modifiers such as in ${VAR:Mpattern}.
 #
 # XXX: Strictly speaking, variable modifiers should be called expression
@@ -49,7 +49,7 @@ DEF=	defined
 .if ${UNDEF:U}
 .endif
 
-# If the value of the variable expression is a number, it is compared against
+# If the value of the expression is a number, it is compared against
 # zero.
 .if ${:U0}
 .  error
@@ -58,7 +58,7 @@ DEF=	defined
 .  error
 .endif
 
-# If the value of the variable expression is not a number, any non-empty
+# If the value of the expression is not a number, any non-empty
 # value evaluates to true, even if there is only whitespace.
 .if ${:U}
 .  error
Index: src/usr.bin/make/unit-tests/deptgt-makeflags.mk
diff -u src/usr.bin/make/unit-tests/deptgt-makeflags.mk:1.7 src/usr.bin/make/unit-tests/deptgt-makeflags.mk:1.8
--- src/usr.bin/make/unit-tests/deptgt-makeflags.mk:1.7	Mon Nov 29 00:17:10 2021
+++ src/usr.bin/make/unit-tests/deptgt-makeflags.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: deptgt-makeflags.mk,v 1.7 2021/11/29 00:17:10 rillig Exp $
+# $NetBSD: deptgt-makeflags.mk,v 1.8 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the special target .MAKEFLAGS in dependency declarations,
 # which adds command line options later, at parse time.
@@ -65,7 +65,7 @@
 .endif
 
 # Next try at defining another newline variable.  Since whitespace around the
-# variable value is trimmed, two empty variable expressions ${:U} surround the
+# variable value is trimmed, two empty expressions ${:U} surround the
 # literal newline now.  This prevents the newline from being skipped during
 # parsing.  The ':=' assignment operator expands the empty variable
 # expressions, leaving only the newline as the variable value.
Index: src/usr.bin/make/unit-tests/var-scope-local.mk
diff -u src/usr.bin/make/unit-tests/var-scope-local.mk:1.7 src/usr.bin/make/unit-tests/var-scope-local.mk:1.8
--- src/usr.bin/make/unit-tests/var-scope-local.mk:1.7	Sat Apr 29 10:16:24 2023
+++ src/usr.bin/make/unit-tests/var-scope-local.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: var-scope-local.mk,v 1.7 2023/04/29 10:16:24 rillig Exp $
+# $NetBSD: var-scope-local.mk,v 1.8 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for target-local variables, such as ${.TARGET} or $@.  These variables
 # are relatively short-lived as they are created just before making the
@@ -107,7 +107,7 @@ dir/subdir/inference-rule-chain.ir-gen-f
 .if $(@) != "\$\(@)"
 .  error
 .endif
-# If the variable expression contains modifiers, the behavior depends on the
+# If the expression contains modifiers, the behavior depends on the
 # actual modifiers.  The modifier ':M' keeps the expression in the state
 # 'undefined'.  Since the expression is still undefined after evaluating all
 # the modifiers, the value of the expression is discarded and the expression
@@ -149,7 +149,7 @@ dir/subdir/inference-rule-chain.ir-gen-f
 # expect: Var_SetExpand: variable name "" expands to empty string, with value "three" - ignored
 # expect: Var_SetExpand: variable name "" expands to empty string, with value "three" - ignored
 one two:=three
-# If the two targets to the left are generated by a variable expression, the
+# If the two targets to the left are generated by an expression, the
 # line is parsed as a variable assignment since its left-hand side is a single
 # word.
 # expect: Global: one two = three
@@ -225,7 +225,7 @@ var-scope-local-append.o: VAR+= local
 # target is actually made.
 # expect: : Making var-scope-local-append.o with VAR="local to var-scope-local-append.o".
 var-scope-local-append.o: VAR += to ${.TARGET}
-# To access the value of a global variable, use a variable expression.  This
+# To access the value of a global variable, use an expression.  This
 # expression is expanded before parsing the whole dependency line.  Since the
 # expansion happens to the right of the dependency operator ':', the expanded
 # text does not influence parsing of the dependency line.  Since the expansion
Index: src/usr.bin/make/unit-tests/varmod-l-name-to-value.mk
diff -u src/usr.bin/make/unit-tests/varmod-l-name-to-value.mk:1.7 src/usr.bin/make/unit-tests/varmod-l-name-to-value.mk:1.8
--- src/usr.bin/make/unit-tests/varmod-l-name-to-value.mk:1.7	Sat Oct 24 08:46:08 2020
+++ src/usr.bin/make/unit-tests/varmod-l-name-to-value.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-l-name-to-value.mk,v 1.7 2020/10/24 08:46:08 rillig Exp $
+# $NetBSD: varmod-l-name-to-value.mk,v 1.8 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the :L modifier, which returns the variable name as the new value.
 
@@ -28,7 +28,7 @@
 .endif
 
 # Between 2020-09-22 (var.c 1.527) and 2020-09-30 (var.c 1.553), there was
-# a bug in the evaluation of variable expressions.  Indirect modifiers like
+# a bug in the evaluation of expressions.  Indirect modifiers like
 # the below :L did not update the definedness of the enclosing expression.
 # This resulted in a wrong "Malformed conditional".
 .if ${value:${:UL}} == ""
Index: src/usr.bin/make/unit-tests/varmod-subst-regex.mk
diff -u src/usr.bin/make/unit-tests/varmod-subst-regex.mk:1.7 src/usr.bin/make/unit-tests/varmod-subst-regex.mk:1.8
--- src/usr.bin/make/unit-tests/varmod-subst-regex.mk:1.7	Mon Jun 21 08:17:39 2021
+++ src/usr.bin/make/unit-tests/varmod-subst-regex.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-subst-regex.mk,v 1.7 2021/06/21 08:17:39 rillig Exp $
+# $NetBSD: varmod-subst-regex.mk,v 1.8 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the :C,from,to, variable modifier.
 
@@ -10,7 +10,7 @@ all: mod-regex-limits
 all: mod-regex-errors
 all: unmatched-subexpression
 
-# The variable expression expands to 4 words.  Of these words, none matches
+# The expression expands to 4 words.  Of these words, none matches
 # the regular expression "a b" since these words don't contain any
 # whitespace.
 .if ${:Ua b b c:C,a b,,} != "a b b c"
@@ -18,7 +18,7 @@ all: unmatched-subexpression
 .endif
 
 # Using the '1' modifier does not change anything.  The '1' modifier just
-# means to apply at most 1 replacement in the whole variable expression.
+# means to apply at most 1 replacement in the whole expression.
 .if ${:Ua b b c:C,a b,,1} != "a b b c"
 .  error
 .endif
@@ -86,7 +86,7 @@ all: unmatched-subexpression
 
 # Multiple asterisks form an invalid regular expression.  This produces an
 # error message and (as of 2020-08-28) stops parsing in the middle of the
-# variable expression.  The unparsed part of the expression is then copied
+# expression.  The unparsed part of the expression is then copied
 # verbatim to the output, which is unexpected and can lead to strange shell
 # commands being run.
 mod-regex-compile-error:
@@ -109,7 +109,7 @@ mod-regex-errors:
 
 	# If the replacement pattern produces a parse error because of an
 	# unknown modifier, the parse error is ignored in ParseModifierPart
-	# and the faulty variable expression expands to "".
+	# and the faulty expression expands to "".
 	@echo $@: ${word:L:C,.*,x${:U:Z}y,W}
 
 # In regular expressions with alternatives, not all capturing groups are

Index: src/usr.bin/make/unit-tests/cond-func-defined.mk
diff -u src/usr.bin/make/unit-tests/cond-func-defined.mk:1.10 src/usr.bin/make/unit-tests/cond-func-defined.mk:1.11
--- src/usr.bin/make/unit-tests/cond-func-defined.mk:1.10	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-func-defined.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-func-defined.mk,v 1.10 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: cond-func-defined.mk,v 1.11 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the defined() function in .if conditions.
 
@@ -25,7 +25,7 @@ ${:UA B}=	variable name with spaces
 .  error
 .endif
 
-# If necessary, the whitespace can be generated by a variable expression.
+# If necessary, the whitespace can be generated by an expression.
 .if !defined(${:UA B})
 .  error
 .endif
@@ -43,8 +43,8 @@ ${:UA B}=	variable name with spaces
 .  if defined(var)
 .    error
 .  else
-# expect+1: In .for loops, variable expressions for the loop variables are
-.    info In .for loops, variable expressions for the loop variables are
+# expect+1: In .for loops, expressions for the loop variables are
+.    info In .for loops, expressions for the loop variables are
 # expect+1: substituted at evaluation time.  There is no actual variable
 .    info substituted at evaluation time.  There is no actual variable
 # expect+1: involved, even if it feels like it.
Index: src/usr.bin/make/unit-tests/cond-token-string.exp
diff -u src/usr.bin/make/unit-tests/cond-token-string.exp:1.10 src/usr.bin/make/unit-tests/cond-token-string.exp:1.11
--- src/usr.bin/make/unit-tests/cond-token-string.exp:1.10	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-token-string.exp	Sun Nov 19 21:47:52 2023
@@ -10,7 +10,7 @@ make: "cond-token-string.mk" line 61: Th
 CondParser_Eval: "${UNDEF}"
 make: "cond-token-string.mk" line 71: An undefined variable in quotes expands to an empty string, which then evaluates to false.
 CondParser_Eval: "${:Uvalue}"
-make: "cond-token-string.mk" line 77: A nonempty variable expression evaluates to true.
+make: "cond-token-string.mk" line 77: A nonempty expression evaluates to true.
 CondParser_Eval: "${:U}"
 make: "cond-token-string.mk" line 86: An empty variable evaluates to false.
 CondParser_Eval: ("${VAR}")
Index: src/usr.bin/make/unit-tests/var-op-assign.mk
diff -u src/usr.bin/make/unit-tests/var-op-assign.mk:1.10 src/usr.bin/make/unit-tests/var-op-assign.mk:1.11
--- src/usr.bin/make/unit-tests/var-op-assign.mk:1.10	Sat Aug 19 10:52:14 2023
+++ src/usr.bin/make/unit-tests/var-op-assign.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: var-op-assign.mk,v 1.10 2023/08/19 10:52:14 rillig Exp $
+# $NetBSD: var-op-assign.mk,v 1.11 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the = variable assignment operator, which overwrites an existing
 # variable or creates it.
@@ -66,7 +66,7 @@ VARIABLE NAME=	variable value
 # neither contain parentheses nor braces.  This is only a side-effect from
 # the implementation of the parser, which cheats when parsing a variable
 # name.  It only counts parentheses and braces instead of properly parsing
-# nested variable expressions such as VAR.${param}.
+# nested expressions such as VAR.${param}.
 #
 VAR(spaces in parentheses)=	()
 VAR{spaces in braces}=		{}

Index: src/usr.bin/make/unit-tests/cond-func-empty.mk
diff -u src/usr.bin/make/unit-tests/cond-func-empty.mk:1.22 src/usr.bin/make/unit-tests/cond-func-empty.mk:1.23
--- src/usr.bin/make/unit-tests/cond-func-empty.mk:1.22	Fri Aug 11 05:01:12 2023
+++ src/usr.bin/make/unit-tests/cond-func-empty.mk	Sun Nov 19 21:47:52 2023
@@ -1,9 +1,9 @@
-# $NetBSD: cond-func-empty.mk,v 1.22 2023/08/11 05:01:12 rillig Exp $
+# $NetBSD: cond-func-empty.mk,v 1.23 2023/11/19 21:47:52 rillig Exp $
 #
-# Tests for the empty() function in .if conditions, which tests a variable
+# Tests for the empty() function in .if conditions, which tests an
 # expression for emptiness.
 #
-# Note that the argument in the parentheses is a variable name, not a variable
+# Note that the argument in the parentheses is a variable name, not an
 # expression.  That name may be followed by ':...' modifiers.
 #
 
@@ -120,7 +120,7 @@ ${:U }=	space
 .  error
 .endif
 
-# The :L modifier creates a variable expression that has the same value as
+# The :L modifier creates an expression that has the same value as
 # its name, which both are "VAR" in this case.  The value is therefore not
 # empty.
 .if empty(VAR:L)
@@ -138,7 +138,7 @@ ${:U }=	space
 .  error
 .endif
 
-# Ensure that variable expressions that appear as part of the function call
+# Ensure that expressions that appear as part of the function call
 # argument are properly parsed.  Typical use cases for this are .for loops,
 # which are expanded to exactly these ${:U} expressions.
 #
@@ -188,20 +188,20 @@ ${:U WORD }=	variable name with spaces
 # side containing the '!empty' was evaluated though, as it had always been.
 #
 # When evaluating the !empty condition, the variable name was parsed as
-# "VARNAME${:U2}", but without expanding any nested variable expression, in
+# "VARNAME${:U2}", but without expanding any nested expression, in
 # this case the ${:U2}.  The expression '${:U2}' was replaced with an empty
 # string, the resulting variable name was thus "VARNAME".  This conceptually
 # wrong variable name should have been discarded quickly after parsing it, to
 # prevent it from doing any harm.
 #
-# The variable expression was expanded though, and this was wrong.  The
+# The expression was expanded though, and this was wrong.  The
 # expansion was done without VARE_WANTRES (called VARF_WANTRES back then)
 # though.  This had the effect that the ${:U1} from the value of VARNAME
 # expanded to an empty string.  This in turn created the seemingly recursive
 # definition VARNAME=${VARNAME}, and that definition was never meant to be
 # expanded.
 #
-# This was fixed by expanding nested variable expressions in the variable name
+# This was fixed by expanding nested expressions in the variable name
 # only if the flag VARE_WANTRES is given.
 VARNAME=	${VARNAME${:U1}}
 .if defined(VARNAME${:U2}) && !empty(VARNAME${:U2})

Index: src/usr.bin/make/unit-tests/cond-func-exists.mk
diff -u src/usr.bin/make/unit-tests/cond-func-exists.mk:1.6 src/usr.bin/make/unit-tests/cond-func-exists.mk:1.7
--- src/usr.bin/make/unit-tests/cond-func-exists.mk:1.6	Mon Nov 30 20:12:29 2020
+++ src/usr.bin/make/unit-tests/cond-func-exists.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-func-exists.mk,v 1.6 2020/11/30 20:12:29 rillig Exp $
+# $NetBSD: cond-func-exists.mk,v 1.7 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the exists() function in .if conditions.
 
@@ -17,7 +17,7 @@
 .endif
 
 # The only way to escape characters that would otherwise influence the parser
-# is to enclose them in a variable expression.  For function arguments,
+# is to enclose them in an expression.  For function arguments,
 # neither the backslash nor the dollar sign act as escape character.
 .if exists(\.)
 .  error
@@ -27,7 +27,7 @@
 .  error
 .endif
 
-# The argument to the function can have several variable expressions.
+# The argument to the function can have several expressions.
 # See cond-func.mk for the characters that cannot be used directly.
 .if !exists(${.PARSEDIR}/${.PARSEFILE})
 .  error
Index: src/usr.bin/make/unit-tests/directive-for-errors.mk
diff -u src/usr.bin/make/unit-tests/directive-for-errors.mk:1.6 src/usr.bin/make/unit-tests/directive-for-errors.mk:1.7
--- src/usr.bin/make/unit-tests/directive-for-errors.mk:1.6	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/directive-for-errors.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: directive-for-errors.mk,v 1.6 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: directive-for-errors.mk,v 1.7 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for error handling in .for loops.
 
@@ -35,7 +35,7 @@
 #
 # The '$$' was not replaced with the values '1' or '3' from the .for loop,
 # instead it was kept as-is, and when the .info directive expanded its
-# argument, each '$$' got replaced with a single '$'.  The "long variable
+# argument, each '$$' got replaced with a single '$'.  The "long
 # expression" ${$} got replaced though, even though this would be a parse
 # error everywhere outside a .for loop.
 ${:U\$}=	dollar		# see whether the "variable" '$' is local

Index: src/usr.bin/make/unit-tests/cond-func.mk
diff -u src/usr.bin/make/unit-tests/cond-func.mk:1.13 src/usr.bin/make/unit-tests/cond-func.mk:1.14
--- src/usr.bin/make/unit-tests/cond-func.mk:1.13	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-func.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-func.mk,v 1.13 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: cond-func.mk,v 1.14 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for those parts of the functions in .if conditions that are common
 # among several functions.
@@ -38,7 +38,7 @@ ${VARNAME_UNBALANCED_BRACES}=	variable n
 .  error
 .endif
 
-# If necessary, the whitespace can be generated by a variable expression.
+# If necessary, the whitespace can be generated by an expression.
 .if !defined(${:UA B})
 .  error
 .endif
Index: src/usr.bin/make/unit-tests/varmod-localtime.mk
diff -u src/usr.bin/make/unit-tests/varmod-localtime.mk:1.13 src/usr.bin/make/unit-tests/varmod-localtime.mk:1.14
--- src/usr.bin/make/unit-tests/varmod-localtime.mk:1.13	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/varmod-localtime.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-localtime.mk,v 1.13 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: varmod-localtime.mk,v 1.14 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the :localtime variable modifier, which formats a timestamp
 # using strftime(3) in local time.
@@ -45,7 +45,7 @@
 
 
 # Before var.c 1.1050 from 2023-05-09, it was not possible to pass the
-# seconds via a variable expression.
+# seconds via an expression.
 .if ${%Y:L:localtime=${:U1593536400}} != "2020"
 .  error
 .endif
Index: src/usr.bin/make/unit-tests/varname.mk
diff -u src/usr.bin/make/unit-tests/varname.mk:1.13 src/usr.bin/make/unit-tests/varname.mk:1.14
--- src/usr.bin/make/unit-tests/varname.mk:1.13	Sat Aug 19 11:09:02 2023
+++ src/usr.bin/make/unit-tests/varname.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varname.mk,v 1.13 2023/08/19 11:09:02 rillig Exp $
+# $NetBSD: varname.mk,v 1.14 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for special variables, such as .MAKE or .PARSEDIR.
 # And for variable names in general.
@@ -12,7 +12,7 @@ VAR{{{}}}=	3 braces
 .  error
 .endif
 
-# In variable expressions, the parser works differently.  It doesn't treat
+# In expressions, the parser works differently.  It doesn't treat
 # braces and parentheses equally, therefore the first closing brace already
 # marks the end of the variable name.
 VARNAME=	VAR(((

Index: src/usr.bin/make/unit-tests/cond-late.mk
diff -u src/usr.bin/make/unit-tests/cond-late.mk:1.4 src/usr.bin/make/unit-tests/cond-late.mk:1.5
--- src/usr.bin/make/unit-tests/cond-late.mk:1.4	Wed May 10 15:53:32 2023
+++ src/usr.bin/make/unit-tests/cond-late.mk	Sun Nov 19 21:47:52 2023
@@ -1,6 +1,6 @@
-# $NetBSD: cond-late.mk,v 1.4 2023/05/10 15:53:32 rillig Exp $
+# $NetBSD: cond-late.mk,v 1.5 2023/11/19 21:47:52 rillig Exp $
 #
-# Using the :? modifier, variable expressions can contain conditional
+# Using the :? modifier, expressions can contain conditional
 # expressions that are evaluated late, at expansion time.
 #
 # Any expressions appearing in these conditions are expanded before parsing
Index: src/usr.bin/make/unit-tests/lint.mk
diff -u src/usr.bin/make/unit-tests/lint.mk:1.4 src/usr.bin/make/unit-tests/lint.mk:1.5
--- src/usr.bin/make/unit-tests/lint.mk:1.4	Sat Jan 30 13:50:18 2021
+++ src/usr.bin/make/unit-tests/lint.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: lint.mk,v 1.4 2021/01/30 13:50:18 rillig Exp $
+# $NetBSD: lint.mk,v 1.5 2023/11/19 21:47:52 rillig Exp $
 #
 # Demonstrates stricter checks that are only enabled in lint mode, using the
 # option -dL.
@@ -6,7 +6,7 @@
 # Before main.c 1.421 from 2020-11-01, make exited successfully even though
 # the error message had been issued as PARSE_FATAL.  This was because back
 # then, make checked for parse errors only after parsing each top-level
-# makefile, in Parse_File.  After that, when expanding variable expressions
+# makefile, in Parse_File.  After that, when expanding expressions
 # in shell commands, the parse errors were not checked again.
 
 # Ouch: as of 2020-08-03, the variable is malformed and parsing stops

Index: src/usr.bin/make/unit-tests/cond-short.mk
diff -u src/usr.bin/make/unit-tests/cond-short.mk:1.21 src/usr.bin/make/unit-tests/cond-short.mk:1.22
--- src/usr.bin/make/unit-tests/cond-short.mk:1.21	Thu Oct 19 18:24:33 2023
+++ src/usr.bin/make/unit-tests/cond-short.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-short.mk,v 1.21 2023/10/19 18:24:33 rillig Exp $
+# $NetBSD: cond-short.mk,v 1.22 2023/11/19 21:47:52 rillig Exp $
 #
 # Demonstrates that in conditions, the right-hand side of an && or ||
 # is only evaluated if it can actually influence the result.
@@ -9,9 +9,9 @@
 # Before 2020-06-28, the right-hand side of an && or || operator was always
 # evaluated, which was wrong.  In cond.c 1.69 and var.c 1.197 on 2015-10-11,
 # Var_Parse got a new parameter named 'wantit'.  Since then it would have been
-# possible to skip evaluation of irrelevant variable expressions and only
+# possible to skip evaluation of irrelevant expressions and only
 # parse them.  They were still evaluated though, the only difference to
-# relevant variable expressions was that in the irrelevant variable
+# relevant expressions was that in the irrelevant variable
 # expressions, undefined variables were allowed.  This allowed for conditions
 # like 'defined(VAR) && ${VAR:S,from,to,} != ""', which no longer produced an
 # error message 'Malformed conditional', but the irrelevant expression was
Index: src/usr.bin/make/unit-tests/directive-for-escape.mk
diff -u src/usr.bin/make/unit-tests/directive-for-escape.mk:1.21 src/usr.bin/make/unit-tests/directive-for-escape.mk:1.22
--- src/usr.bin/make/unit-tests/directive-for-escape.mk:1.21	Fri Jun 23 06:11:06 2023
+++ src/usr.bin/make/unit-tests/directive-for-escape.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: directive-for-escape.mk,v 1.21 2023/06/23 06:11:06 rillig Exp $
+# $NetBSD: directive-for-escape.mk,v 1.22 2023/11/19 21:47:52 rillig Exp $
 #
 # Test escaping of special characters in the iteration values of a .for loop.
 # These values get expanded later using the :U variable modifier, and this
@@ -69,7 +69,7 @@ VALUES=		$$ $${V} $${V:=-with-modifier} 
 
 # Try to cover the code for nested '{}' in ExprLen, without success.
 #
-# The value of the variable VALUES is not meant to be a variable expression.
+# The value of the variable VALUES is not meant to be an expression.
 # Instead, it is meant to represent literal text, the only escaping mechanism
 # being that each '$' is written as '$$'.
 VALUES=		$${UNDEF:U\$$\$$ {{}} end}
@@ -128,7 +128,7 @@ ${:U\\}=	backslash
 # XXX: It is not the job of ExprLen to parse an expression, it is naive to
 # expect ExprLen to get all the details right in just a few lines of code.
 # Each variable modifier has its own inconsistent way of parsing nested
-# variable expressions, braces and parentheses.  (Compare ':M', ':S', and
+# expressions, braces and parentheses.  (Compare ':M', ':S', and
 # ':D' for details.)  The only sensible thing to do is therefore to let
 # Var_Parse do all the parsing work.
 VALUES=		begin<$${UNDEF:Ufallback:N{{{}}}}>end
@@ -147,7 +147,7 @@ VALUES=		begin<$${UNDEF:Ufallback:N{{{}}
 # expect-2: $
 
 # Before for.c 1.173 from 2023-05-08, the name of the iteration variable
-# could contain colons, which affected variable expressions having this exact
+# could contain colons, which affected expressions having this exact
 # modifier.  This possibility was neither intended nor documented.
 NUMBERS=	one two three
 # expect+1: invalid character ':' in .for loop variable name
@@ -203,7 +203,7 @@ i,=		comma
 .  info eight ${$}${$}${$}${$} and no cents.
 .endfor
 # Outside a .for loop, '${$}' is interpreted differently. The outer '$' starts
-# a variable expression. The inner '$' is followed by a '}' and is thus a
+# an expression. The inner '$' is followed by a '}' and is thus a
 # silent syntax error, the '$' is skipped. The variable name is thus '', and
 # since since there is never a variable named '', the whole expression '${$}'
 # evaluates to an empty string.

Index: src/usr.bin/make/unit-tests/cond-token-number.mk
diff -u src/usr.bin/make/unit-tests/cond-token-number.mk:1.9 src/usr.bin/make/unit-tests/cond-token-number.mk:1.10
--- src/usr.bin/make/unit-tests/cond-token-number.mk:1.9	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-token-number.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-token-number.mk,v 1.9 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: cond-token-number.mk,v 1.10 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for number tokens in .if conditions.
 #
@@ -52,13 +52,13 @@
 .  error
 .endif
 
-# When the number comes from a variable expression though, it may be signed.
+# When the number comes from an expression though, it may be signed.
 # XXX: This is inconsistent.
 .if ${:U+0}
 .  error
 .endif
 
-# When the number comes from a variable expression though, it may be signed.
+# When the number comes from an expression though, it may be signed.
 # XXX: This is inconsistent.
 .if !${:U+1}
 .  error
Index: src/usr.bin/make/unit-tests/opt-debug-file.mk
diff -u src/usr.bin/make/unit-tests/opt-debug-file.mk:1.9 src/usr.bin/make/unit-tests/opt-debug-file.mk:1.10
--- src/usr.bin/make/unit-tests/opt-debug-file.mk:1.9	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/opt-debug-file.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: opt-debug-file.mk,v 1.9 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: opt-debug-file.mk,v 1.10 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the -dF command line option, which redirects the debug log
 # to a file instead of writing it to stderr.
@@ -18,7 +18,7 @@ VAR=	value ${:Uexpanded}
 # Make sure that the debug logging file contains some logging.
 DEBUG_OUTPUT:=	${:!cat opt-debug-file.debuglog!}
 # Grmbl.  Because of the := operator in the above line, the variable
-# value contains ${:Uexpanded}.  This variable expression is expanded
+# value contains ${:Uexpanded}.  This expression is expanded
 # when it is used in the condition below.  Therefore, be careful when storing
 # untrusted input in variables.
 #.MAKEFLAGS: -dc -dFstderr
Index: src/usr.bin/make/unit-tests/varname-empty.mk
diff -u src/usr.bin/make/unit-tests/varname-empty.mk:1.9 src/usr.bin/make/unit-tests/varname-empty.mk:1.10
--- src/usr.bin/make/unit-tests/varname-empty.mk:1.9	Sun Apr  4 10:13:09 2021
+++ src/usr.bin/make/unit-tests/varname-empty.mk	Sun Nov 19 21:47:52 2023
@@ -1,9 +1,9 @@
-# $NetBSD: varname-empty.mk,v 1.9 2021/04/04 10:13:09 rillig Exp $
+# $NetBSD: varname-empty.mk,v 1.10 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the special variable with the empty name.
 #
 # There is no variable named "" at all, and this fact is used a lot in
-# variable expressions of the form ${:Ufallback}.  These expressions are
+# expressions of the form ${:Ufallback}.  These expressions are
 # based on the variable named "" and use the :U modifier to assign a
 # fallback value to the expression (but not to the variable).
 #
Index: src/usr.bin/make/unit-tests/varparse-errors.mk
diff -u src/usr.bin/make/unit-tests/varparse-errors.mk:1.9 src/usr.bin/make/unit-tests/varparse-errors.mk:1.10
--- src/usr.bin/make/unit-tests/varparse-errors.mk:1.9	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/varparse-errors.mk	Sun Nov 19 21:47:52 2023
@@ -1,6 +1,6 @@
-# $NetBSD: varparse-errors.mk,v 1.9 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: varparse-errors.mk,v 1.10 2023/11/19 21:47:52 rillig Exp $
 
-# Tests for parsing and evaluating all kinds of variable expressions.
+# Tests for parsing and evaluating all kinds of expressions.
 #
 # This is the basis for redesigning the error handling in Var_Parse and
 # Var_Subst, collecting typical and not so typical use cases.
@@ -23,7 +23,7 @@ ERR_BAD_MOD=	An ${:Uindirect:Z} expressi
 
 ERR_EVAL=	An evaluation error ${:Uvalue:C,.,\3,}.
 
-# In a conditional, a variable expression that is not enclosed in quotes is
+# In a conditional, an expression that is not enclosed in quotes is
 # expanded using the mode VARE_UNDEFERR.
 # The variable itself must be defined.
 # It may refer to undefined variables though.

Index: src/usr.bin/make/unit-tests/cond-token-plain.exp
diff -u src/usr.bin/make/unit-tests/cond-token-plain.exp:1.19 src/usr.bin/make/unit-tests/cond-token-plain.exp:1.20
--- src/usr.bin/make/unit-tests/cond-token-plain.exp:1.19	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-token-plain.exp	Sun Nov 19 21:47:52 2023
@@ -35,9 +35,9 @@ make: "cond-token-plain.mk" line 121: ok
 CondParser_Eval: V${UNDEF}AR
 make: "cond-token-plain.mk" line 130: Undefined variables in bare words expand to an empty string.
 CondParser_Eval: 0${:Ux00}
-make: "cond-token-plain.mk" line 139: Numbers can be composed from literals and variable expressions.
+make: "cond-token-plain.mk" line 139: Numbers can be composed from literals and expressions.
 CondParser_Eval: 0${:Ux01}
-make: "cond-token-plain.mk" line 144: Numbers can be composed from literals and variable expressions.
+make: "cond-token-plain.mk" line 144: Numbers can be composed from literals and expressions.
 CondParser_Eval: "" ==
 make: "cond-token-plain.mk" line 151: Missing right-hand side of operator '=='
 CondParser_Eval: == ""

Index: src/usr.bin/make/unit-tests/cond-token-plain.mk
diff -u src/usr.bin/make/unit-tests/cond-token-plain.mk:1.18 src/usr.bin/make/unit-tests/cond-token-plain.mk:1.19
--- src/usr.bin/make/unit-tests/cond-token-plain.mk:1.18	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-token-plain.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-token-plain.mk,v 1.18 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: cond-token-plain.mk,v 1.19 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for plain tokens (that is, string literals without quotes)
 # in .if conditions.  These are also called bare words.
@@ -115,7 +115,7 @@ VAR=	defined
 .  error
 .endif
 
-# Bare words may be intermixed with variable expressions.
+# Bare words may be intermixed with expressions.
 .if V${:UA}R
 # expect+1: ok
 .  info ok
@@ -135,13 +135,13 @@ VAR=	defined
 .if 0${:Ux00}
 .  error
 .else
-# expect+1: Numbers can be composed from literals and variable expressions.
-.  info Numbers can be composed from literals and variable expressions.
+# expect+1: Numbers can be composed from literals and expressions.
+.  info Numbers can be composed from literals and expressions.
 .endif
 
 .if 0${:Ux01}
-# expect+1: Numbers can be composed from literals and variable expressions.
-.  info Numbers can be composed from literals and variable expressions.
+# expect+1: Numbers can be composed from literals and expressions.
+.  info Numbers can be composed from literals and expressions.
 .else
 .  error
 .endif
@@ -205,7 +205,7 @@ ${:U\\\\}=	backslash
 # expect+1: Malformed conditional (left == right)
 .if left == right
 .endif
-# Before cond.c 1.276 from 2021-09-21, a variable expression containing the
+# Before cond.c 1.276 from 2021-09-21, an expression containing the
 # modifier ':?:' allowed unquoted string literals for the rest of the
 # condition.  This was an unintended implementation mistake.
 # expect+1: Malformed conditional (${0:?:} || left == right)
@@ -245,7 +245,7 @@ ${:U\\\\}=	backslash
 # A different situation is when CondParser.leftUnquotedOK is true.  This
 # situation arises in expressions of the form ${cond:?yes:no}.  As of
 # 2021-12-30, the condition in such an expression is evaluated before parsing
-# the condition, see varmod-ifelse.mk.  To pass a variable expression to the
+# the condition, see varmod-ifelse.mk.  To pass an expression to the
 # condition parser, it needs to be escaped.  This rarely happens in practice,
 # in most cases the conditions are simple enough that it doesn't matter
 # whether the condition is first evaluated and then parsed, or vice versa.
Index: src/usr.bin/make/unit-tests/var-op-expand.mk
diff -u src/usr.bin/make/unit-tests/var-op-expand.mk:1.18 src/usr.bin/make/unit-tests/var-op-expand.mk:1.19
--- src/usr.bin/make/unit-tests/var-op-expand.mk:1.18	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/var-op-expand.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: var-op-expand.mk,v 1.18 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: var-op-expand.mk,v 1.19 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the := variable assignment operator, which expands its
 # right-hand side.
@@ -20,9 +20,9 @@ VAR:=			value
 
 # When a ':=' assignment is performed, its right-hand side is evaluated and
 # expanded as far as possible.  Contrary to other situations, '$$' and
-# variable expressions based on undefined variables are preserved though.
+# expressions based on undefined variables are preserved though.
 #
-# Whether a variable expression is undefined or not is determined at the end
+# Whether an expression is undefined or not is determined at the end
 # of evaluating the expression.  The consequence is that ${:Ufallback} expands
 # to "fallback"; initially this expression is undefined since it is based on
 # the variable named "", which is guaranteed to be never defined, but at the

Index: src/usr.bin/make/unit-tests/cond-token-string.mk
diff -u src/usr.bin/make/unit-tests/cond-token-string.mk:1.8 src/usr.bin/make/unit-tests/cond-token-string.mk:1.9
--- src/usr.bin/make/unit-tests/cond-token-string.mk:1.8	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/cond-token-string.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: cond-token-string.mk,v 1.8 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: cond-token-string.mk,v 1.9 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for quoted string literals in .if conditions.
 #
@@ -26,7 +26,7 @@
 .endif
 
 # The 'x' produces a "Malformed conditional" since the left-hand side of a
-# comparison in an .if directive must be either a variable expression, a
+# comparison in an .if directive must be either an expression, a
 # quoted string literal or a number that starts with a digit.
 # expect+1: Malformed conditional (x${:Uvalue} == "")
 .if x${:Uvalue} == ""
@@ -73,8 +73,8 @@
 .endif
 
 .if "${:Uvalue}"
-# expect+1: A nonempty variable expression evaluates to true.
-.  info A nonempty variable expression evaluates to true.
+# expect+1: A nonempty expression evaluates to true.
+.  info A nonempty expression evaluates to true.
 .else
 .  error
 .endif
@@ -87,7 +87,7 @@
 .endif
 
 # A non-empty string evaluates to true, no matter if it's a literal string or
-# if it contains variable expressions.  The parentheses are not necessary for
+# if it contains expressions.  The parentheses are not necessary for
 # the parser, in this case their only purpose is to make the code harder to
 # read for humans.
 VAR=	value
Index: src/usr.bin/make/unit-tests/dep-var.mk
diff -u src/usr.bin/make/unit-tests/dep-var.mk:1.8 src/usr.bin/make/unit-tests/dep-var.mk:1.9
--- src/usr.bin/make/unit-tests/dep-var.mk:1.8	Wed May 10 15:53:32 2023
+++ src/usr.bin/make/unit-tests/dep-var.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: dep-var.mk,v 1.8 2023/05/10 15:53:32 rillig Exp $
+# $NetBSD: dep-var.mk,v 1.9 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for variable references in dependency declarations.
 #
@@ -9,7 +9,7 @@
 
 # expect: Var_Parse: ${UNDEF1} (eval-defined)
 # Even though undefined expressions should lead to errors, no error message is
-# generated for this line.  The variable expression ${UNDEF1} simply expands
+# generated for this line.  The expression ${UNDEF1} simply expands
 # to an empty string.
 all: ${UNDEF1}
 
@@ -25,7 +25,7 @@ all: $${DEF2} a-$${DEF2}-b
 # XXX: The -dv log says later when expanding the sources of 'all':
 #	Var_Parse: ${UNDEF3} (eval-defined)
 # but no error message is generated for this line, just like for UNDEF1.
-# The variable expression ${UNDEF3} simply expands to an empty string.
+# The expression ${UNDEF3} simply expands to an empty string.
 all: $${UNDEF3}
 
 # Try out how many levels of indirection are really expanded in dependency
Index: src/usr.bin/make/unit-tests/directive-else.mk
diff -u src/usr.bin/make/unit-tests/directive-else.mk:1.8 src/usr.bin/make/unit-tests/directive-else.mk:1.9
--- src/usr.bin/make/unit-tests/directive-else.mk:1.8	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/directive-else.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: directive-else.mk,v 1.8 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: directive-else.mk,v 1.9 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the .else directive.
 #
@@ -45,7 +45,7 @@
 .else # comment
 .endif
 
-# A variable expression does count as an argument, even if it is empty.
+# An expression does count as an argument, even if it is empty.
 .if 0
 # expect+1: The .else directive does not take arguments
 .else ${:U}
Index: src/usr.bin/make/unit-tests/parse-var.mk
diff -u src/usr.bin/make/unit-tests/parse-var.mk:1.8 src/usr.bin/make/unit-tests/parse-var.mk:1.9
--- src/usr.bin/make/unit-tests/parse-var.mk:1.8	Sat Feb 18 11:16:09 2023
+++ src/usr.bin/make/unit-tests/parse-var.mk	Sun Nov 19 21:47:52 2023
@@ -1,6 +1,6 @@
-# $NetBSD: parse-var.mk,v 1.8 2023/02/18 11:16:09 rillig Exp $
+# $NetBSD: parse-var.mk,v 1.9 2023/11/19 21:47:52 rillig Exp $
 #
-# Tests for parsing variable expressions.
+# Tests for parsing expressions.
 #
 # TODO: Add systematic tests for all of the below combinations.
 #
@@ -77,7 +77,7 @@
 .MAKEFLAGS: -dL
 
 # In variable assignments, there may be spaces in the middle of the left-hand
-# side of the assignment, but only if they occur inside variable expressions.
+# side of the assignment, but only if they occur inside expressions.
 # Leading spaces (but not tabs) are possible but unusual.
 # Trailing spaces are common in some coding styles, others omit them.
 VAR.${:U param }=	value
Index: src/usr.bin/make/unit-tests/varmod-range.mk
diff -u src/usr.bin/make/unit-tests/varmod-range.mk:1.8 src/usr.bin/make/unit-tests/varmod-range.mk:1.9
--- src/usr.bin/make/unit-tests/varmod-range.mk:1.8	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/varmod-range.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-range.mk,v 1.8 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: varmod-range.mk,v 1.9 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the :range variable modifier, which generates sequences
 # of integers from the given range.
@@ -7,7 +7,7 @@
 #	modword.mk
 
 # The :range modifier generates a sequence of integers, one number per
-# word of the variable expression's value.
+# word of the expression's value.
 .if ${a b c:L:range} != "1 2 3"
 .  error
 .endif
@@ -19,14 +19,14 @@
 .endif
 
 # The :range modifier takes the number of words from the value of the
-# variable expression.  If that expression is undefined, the range is
+# expression.  If that expression is undefined, the range is
 # undefined as well.  This should not come as a surprise.
 .if "${:range}" != ""
 .  error
 .endif
 
 # The :range modifier can be given a parameter, which makes the generated
-# range independent from the value or the name of the variable expression.
+# range independent from the value or the name of the expression.
 #
 # XXX: As of 2020-09-27, the :range=... modifier does not turn the undefined
 # expression into a defined one.  This looks like an oversight.
Index: src/usr.bin/make/unit-tests/varmod-undefined.mk
diff -u src/usr.bin/make/unit-tests/varmod-undefined.mk:1.8 src/usr.bin/make/unit-tests/varmod-undefined.mk:1.9
--- src/usr.bin/make/unit-tests/varmod-undefined.mk:1.8	Sat Aug  6 21:26:05 2022
+++ src/usr.bin/make/unit-tests/varmod-undefined.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-undefined.mk,v 1.8 2022/08/06 21:26:05 rillig Exp $
+# $NetBSD: varmod-undefined.mk,v 1.9 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the :U variable modifier, which returns the given string
 # if the variable is undefined.
@@ -19,14 +19,14 @@
 .endif
 # .endfor
 
-# The variable expressions in the text of the :U modifier may be arbitrarily
+# The expressions in the text of the :U modifier may be arbitrarily
 # nested.
 
 .if ${:U${:Unested}${${${:Udeeply}}}} != nested
 .  error
 .endif
 
-# The nested variable expressions may contain braces, and these braces don't
+# The nested expressions may contain braces, and these braces don't
 # need to match pairwise.  In the following example, the :S modifier uses '{'
 # as delimiter, which confuses both editors and humans because the opening
 # and closing braces don't match anymore.  It's syntactically valid though.
Index: src/usr.bin/make/unit-tests/varmod.mk
diff -u src/usr.bin/make/unit-tests/varmod.mk:1.8 src/usr.bin/make/unit-tests/varmod.mk:1.9
--- src/usr.bin/make/unit-tests/varmod.mk:1.8	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/varmod.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod.mk,v 1.8 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: varmod.mk,v 1.9 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for variable modifiers, such as :Q, :S,from,to or :Ufallback.
 #
@@ -59,7 +59,7 @@
 DOLLAR1=	$$
 DOLLAR2=	${:U\$}
 
-# To get a single '$' sign in the value of a variable expression, it has to
+# To get a single '$' sign in the value of an expression, it has to
 # be written as '$$' in a literal variable value.
 #
 # See Var_Parse, where it calls Var_Subst.
@@ -107,7 +107,7 @@ DOLLAR2=	${:U\$}
 
 # The variable modifier :P does not fall back to the SysV modifier.
 # Therefore the modifier :P=RE generates a parse error.
-# XXX: The .error should not be reached since the variable expression is
+# XXX: The .error should not be reached since the expression is
 # malformed, and this error should be propagated up to Cond_EvalLine.
 VAR=	STOP
 # expect+1: Missing delimiter ':' after modifier "P"

Index: src/usr.bin/make/unit-tests/deptgt.mk
diff -u src/usr.bin/make/unit-tests/deptgt.mk:1.14 src/usr.bin/make/unit-tests/deptgt.mk:1.15
--- src/usr.bin/make/unit-tests/deptgt.mk:1.14	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/deptgt.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: deptgt.mk,v 1.14 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: deptgt.mk,v 1.15 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for special targets like .BEGIN or .SUFFIXES in dependency
 # declarations.
@@ -30,7 +30,7 @@ VAR=value			# targets := NULL
 	: command3		# parse error, since targets == NULL
 
 # In a dependency declaration, the list of targets can be empty.
-# It doesn't matter whether the empty string is generated by a variable
+# It doesn't matter whether the empty string is generated by an
 # expression or whether it is just omitted.
 .MAKEFLAGS: -dp
 ${:U}: empty-source

Index: src/usr.bin/make/unit-tests/directive-for-empty.mk
diff -u src/usr.bin/make/unit-tests/directive-for-empty.mk:1.2 src/usr.bin/make/unit-tests/directive-for-empty.mk:1.3
--- src/usr.bin/make/unit-tests/directive-for-empty.mk:1.2	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/directive-for-empty.mk	Sun Nov 19 21:47:52 2023
@@ -1,12 +1,12 @@
-# $NetBSD: directive-for-empty.mk,v 1.2 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: directive-for-empty.mk,v 1.3 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for .for loops containing conditions of the form 'empty(var:...)'.
 #
-# When a .for loop is expanded, variable expressions in the body of the loop
+# When a .for loop is expanded, expressions in the body of the loop
 # are replaced with expressions containing the variable values.  This
 # replacement is a bit naive but covers most of the practical cases.  The one
 # popular exception is the condition 'empty(var:Modifiers)', which does not
-# look like a variable expression and is thus not replaced.
+# look like an expression and is thus not replaced.
 #
 # See also:
 #	https://gnats.netbsd.org/43821
@@ -24,7 +24,7 @@
 .endfor
 
 
-# In conditions, the function call to 'empty' does not look like a variable
+# In conditions, the function call to 'empty' does not look like an
 # expression, therefore it is not replaced.  Since there is no global variable
 # named 'i', this expression makes for a leaky abstraction.  If the .for
 # variables were real variables, calling 'empty' would work on them as well.
@@ -51,8 +51,8 @@
 # loop would be naive and require many special cases, as there are many cases
 # that need to be considered when deciding whether the token 'empty' is a
 # function call or not, as demonstrated by the following examples.  For
-# variable expressions like '${i:Modifiers}', this is simpler as a single
-# dollar almost always starts a variable expression.  For counterexamples and
+# expressions like '${i:Modifiers}', this is simpler as a single
+# dollar almost always starts an expression.  For counterexamples and
 # edge cases, see directive-for-escape.mk.  Adding another such tricky detail
 # is out of the question.
 .MAKEFLAGS: -df
Index: src/usr.bin/make/unit-tests/directive-for-if.mk
diff -u src/usr.bin/make/unit-tests/directive-for-if.mk:1.2 src/usr.bin/make/unit-tests/directive-for-if.mk:1.3
--- src/usr.bin/make/unit-tests/directive-for-if.mk:1.2	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/directive-for-if.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: directive-for-if.mk,v 1.2 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: directive-for-if.mk,v 1.3 2023/11/19 21:47:52 rillig Exp $
 #
 # Test for a .for directive that contains an .if directive.
 #
@@ -71,7 +71,7 @@ _!=	echo "${var}" 1>&2; echo # In 2005, 
 .endfor
 
 # Before for.c 1.39 from 2008-12-21, a common workaround was to surround the
-# variable expression from the .for loop with '"'.  Such a string literal
+# expression from the .for loop with '"'.  Such a string literal
 # has been allowed since cond.c 1.23 from 2004-04-13.  Between that commit and
 # the one from 2008, the parser would still get confused if the value from the
 # .for loop contained '"', which was effectively a code injection.
Index: src/usr.bin/make/unit-tests/opt-debug-var.mk
diff -u src/usr.bin/make/unit-tests/opt-debug-var.mk:1.2 src/usr.bin/make/unit-tests/opt-debug-var.mk:1.3
--- src/usr.bin/make/unit-tests/opt-debug-var.mk:1.2	Sun Jan 23 16:09:38 2022
+++ src/usr.bin/make/unit-tests/opt-debug-var.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: opt-debug-var.mk,v 1.2 2022/01/23 16:09:38 rillig Exp $
+# $NetBSD: opt-debug-var.mk,v 1.3 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the -dv command line option, which adds debug logging about
 # variable assignment and evaluation.
@@ -15,7 +15,7 @@ SUBST:=		value
 .if defined(ASSIGNED)
 .endif
 
-# The usual form of variable expressions is ${VAR}.  The form $(VAR) is used
+# The usual form of expressions is ${VAR}.  The form $(VAR) is used
 # less often as it can be visually confused with the shell construct for
 # capturing the output of a subshell, which looks the same.
 #

Index: src/usr.bin/make/unit-tests/directive-ifmake.mk
diff -u src/usr.bin/make/unit-tests/directive-ifmake.mk:1.11 src/usr.bin/make/unit-tests/directive-ifmake.mk:1.12
--- src/usr.bin/make/unit-tests/directive-ifmake.mk:1.11	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/directive-ifmake.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: directive-ifmake.mk,v 1.11 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: directive-ifmake.mk,v 1.12 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the .ifmake directive, which provides a shortcut for asking
 # whether a certain target is requested to be made from the command line.
@@ -75,7 +75,7 @@
 .  error
 .endif
 
-# A condition that consists of a variable expression only (without any
+# A condition that consists of an expression only (without any
 # comparison operator) can be used with .if and the other .ifxxx directives.
 .ifmake ${:Ufirst}
 # expect+1: ok
Index: src/usr.bin/make/unit-tests/varmod-match-escape.mk
diff -u src/usr.bin/make/unit-tests/varmod-match-escape.mk:1.11 src/usr.bin/make/unit-tests/varmod-match-escape.mk:1.12
--- src/usr.bin/make/unit-tests/varmod-match-escape.mk:1.11	Thu Nov  2 05:14:58 2023
+++ src/usr.bin/make/unit-tests/varmod-match-escape.mk	Sun Nov 19 21:47:52 2023
@@ -1,7 +1,7 @@
-# $NetBSD: varmod-match-escape.mk,v 1.11 2023/11/02 05:14:58 rillig Exp $
+# $NetBSD: varmod-match-escape.mk,v 1.12 2023/11/19 21:47:52 rillig Exp $
 #
 # As of 2020-08-01, the :M and :N modifiers interpret backslashes differently,
-# depending on whether there was a variable expression somewhere before the
+# depending on whether there was an expression somewhere before the
 # first backslash or not.  See ParseModifier_Match, "copy = true".
 #
 # Apart from the different and possibly confusing debug output, there is no
@@ -18,17 +18,17 @@ SPECIALS=	\: : \\ * \*
 .endif
 
 # And now both cases combined: A single modifier with both an escaped ':'
-# as well as a variable expression that expands to a ':'.
+# as well as an expression that expands to a ':'.
 #
-# XXX: As of 2020-11-01, when an escaped ':' occurs before the variable
+# XXX: As of 2020-11-01, when an escaped ':' occurs before the
 # expression, the whole modifier text is subject to unescaping '\:' to ':',
-# before the variable expression is expanded.  This means that the '\:' in
-# the variable expression is expanded as well, turning ${:U\:} into a simple
+# before the expression is expanded.  This means that the '\:' in
+# the expression is expanded as well, turning ${:U\:} into a simple
 # ${:U:}, which silently expands to an empty string, instead of generating
 # an error message.
 #
 # XXX: As of 2020-11-01, the modifier on the right-hand side of the
-# comparison is parsed differently though.  First, the variable expression
+# comparison is parsed differently though.  First, the expression
 # is parsed, resulting in ':' and needSubst=true.  After that, the escaped
 # ':' is seen, and this time, copy=true is not executed but stays copy=false.
 # Therefore the escaped ':' is kept as-is, and the final pattern becomes

Index: src/usr.bin/make/unit-tests/opt-debug-lint.mk
diff -u src/usr.bin/make/unit-tests/opt-debug-lint.mk:1.15 src/usr.bin/make/unit-tests/opt-debug-lint.mk:1.16
--- src/usr.bin/make/unit-tests/opt-debug-lint.mk:1.15	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/opt-debug-lint.mk	Sun Nov 19 21:47:52 2023
@@ -1,7 +1,7 @@
-# $NetBSD: opt-debug-lint.mk,v 1.15 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: opt-debug-lint.mk,v 1.16 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the -dL command line option, which runs additional checks
-# to catch common mistakes, such as unclosed variable expressions.
+# to catch common mistakes, such as unclosed expressions.
 
 .MAKEFLAGS: -dL
 
@@ -91,7 +91,7 @@ ${UNDEF}: ${UNDEF}
 #
 # Before var.c 1.856 from 2021-03-14, this regular expression was then
 # compiled even though that was not necessary for checking the syntax at the
-# level of variable expressions.  The unexpanded '$' then resulted in a wrong
+# level of expressions.  The unexpanded '$' then resulted in a wrong
 # error message.
 #
 # This only happened in lint mode since in default mode the early check for
Index: src/usr.bin/make/unit-tests/varmod-assign.mk
diff -u src/usr.bin/make/unit-tests/varmod-assign.mk:1.15 src/usr.bin/make/unit-tests/varmod-assign.mk:1.16
--- src/usr.bin/make/unit-tests/varmod-assign.mk:1.15	Wed Feb  9 21:09:24 2022
+++ src/usr.bin/make/unit-tests/varmod-assign.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-assign.mk,v 1.15 2022/02/09 21:09:24 rillig Exp $
+# $NetBSD: varmod-assign.mk,v 1.16 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the obscure ::= variable modifiers, which perform variable
 # assignments during evaluation, just like the = operator in C.
@@ -116,7 +116,7 @@ APPEND.dollar=		$${APPEND.indirect}
 .endif
 
 
-# The assignment modifier can be used in a variable expression that is
+# The assignment modifier can be used in an expression that is
 # enclosed in parentheses.  In such a case, parsing stops at the first ')',
 # not at the first '}'.
 VAR=	previous
Index: src/usr.bin/make/unit-tests/varmod-defined.mk
diff -u src/usr.bin/make/unit-tests/varmod-defined.mk:1.15 src/usr.bin/make/unit-tests/varmod-defined.mk:1.16
--- src/usr.bin/make/unit-tests/varmod-defined.mk:1.15	Thu Nov  2 05:40:49 2023
+++ src/usr.bin/make/unit-tests/varmod-defined.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-defined.mk,v 1.15 2023/11/02 05:40:49 rillig Exp $
+# $NetBSD: varmod-defined.mk,v 1.16 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the :D variable modifier, which returns the given string
 # if the variable is defined.  It is closely related to the :U modifier.
@@ -46,10 +46,10 @@ DEF=	defined
 .  error
 .endif
 
-# Like in several other places in variable expressions, when
+# Like in several other places in expressions, when
 # ApplyModifier_Defined calls Var_Parse, double dollars lead to a parse
 # error that is silently ignored.  This makes all dollar signs disappear,
-# except for the last, which is a well-formed variable expression.
+# except for the last, which is a well-formed expression.
 #
 .if ${DEF:D$$$$$${DEF}} != "defined"
 .  error
Index: src/usr.bin/make/unit-tests/varmod-sysv.mk
diff -u src/usr.bin/make/unit-tests/varmod-sysv.mk:1.15 src/usr.bin/make/unit-tests/varmod-sysv.mk:1.16
--- src/usr.bin/make/unit-tests/varmod-sysv.mk:1.15	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/varmod-sysv.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-sysv.mk,v 1.15 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: varmod-sysv.mk,v 1.16 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the variable modifier ':from=to', which replaces the suffix
 # "from" with "to".  It can also use '%' as a wildcard.
@@ -49,7 +49,7 @@
 .  error
 .endif
 
-# In the modifier ':from=to', both parts can contain variable expressions.
+# In the modifier ':from=to', both parts can contain expressions.
 .if ${one two:L:${:Uone}=${:U1}} != "1 two"
 .  error
 .endif
@@ -69,7 +69,7 @@
 .endif
 
 # The replacement string can contain spaces, thereby changing the number
-# of words in the variable expression.
+# of words in the expression.
 .if ${In:L:%=% ${:Uthe Sun}} != "In the Sun"
 .  error
 .endif
@@ -206,7 +206,7 @@
 .  error
 .endif
 
-# This is not a SysV modifier since the nested variable expression expands
+# This is not a SysV modifier since the nested expression expands
 # to an empty string.  The '=' in it should be irrelevant during parsing.
 # XXX: As of 2020-12-05, this expression generates an "Unfinished modifier"
 # error, while the correct error message would be "Unknown modifier" since
@@ -221,7 +221,7 @@
 # "fromto}...".  The next modifier is a SysV modifier.  ApplyModifier_SysV
 # parses the modifier as "from${:D=}to", ending at the '}'.  Next, the two
 # parts of the modifier are parsed using ParseModifierPart, which scans
-# differently, properly handling nested variable expressions.  The two parts
+# differently, properly handling nested expressions.  The two parts
 # are now "fromto}..." and "replaced".
 .if "${:Ufromto\}...:from${:D=}to}...=replaced}" != "replaced"
 .  error

Index: src/usr.bin/make/unit-tests/varmod-gmtime.mk
diff -u src/usr.bin/make/unit-tests/varmod-gmtime.mk:1.20 src/usr.bin/make/unit-tests/varmod-gmtime.mk:1.21
--- src/usr.bin/make/unit-tests/varmod-gmtime.mk:1.20	Thu Oct 19 18:24:33 2023
+++ src/usr.bin/make/unit-tests/varmod-gmtime.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-gmtime.mk,v 1.20 2023/10/19 18:24:33 rillig Exp $
+# $NetBSD: varmod-gmtime.mk,v 1.21 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the :gmtime variable modifier, which formats a timestamp
 # using strftime(3) in UTC.
@@ -45,7 +45,7 @@
 
 
 # Before var.c 1.1050 from 2023-05-09, it was not possible to pass the
-# seconds via a variable expression.
+# seconds via an expression.
 .if ${%Y:L:gmtime=${:U1593536400}} != "2020"
 .  error
 .endif

Index: src/usr.bin/make/unit-tests/varmod-ifelse.mk
diff -u src/usr.bin/make/unit-tests/varmod-ifelse.mk:1.24 src/usr.bin/make/unit-tests/varmod-ifelse.mk:1.25
--- src/usr.bin/make/unit-tests/varmod-ifelse.mk:1.24	Sat Nov 18 19:25:43 2023
+++ src/usr.bin/make/unit-tests/varmod-ifelse.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-ifelse.mk,v 1.24 2023/11/18 19:25:43 rillig Exp $
+# $NetBSD: varmod-ifelse.mk,v 1.25 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the ${cond:?then:else} variable modifier, which evaluates either
 # the then-expression or the else-expression, depending on the condition.
@@ -13,19 +13,19 @@
 # The variable name of the expression is expanded and then taken as the
 # condition.  In the below example it becomes:
 #
-#	variable expression == "literal"
+#	bare words == "literal"
 #
 # This confuses the parser, which expects an operator instead of the bare
 # word "expression".  If the name were expanded lazily, everything would be
 # fine since the condition would be:
 #
-#	${:Uvariable expression} == "literal"
+#	${:Ubare words} == "literal"
 #
 # Evaluating the variable name lazily would require additional code in
 # Var_Parse and ParseVarname, it would be more useful and predictable
 # though.
-# expect+1: Malformed conditional (${${:Uvariable expression} == "literal":?bad:bad})
-.if ${${:Uvariable expression} == "literal":?bad:bad}
+# expect+1: Malformed conditional (${${:Ubare words} == "literal":?bad:bad})
+.if ${${:Ubare words} == "literal":?bad:bad}
 .  error
 .else
 .  error
@@ -61,7 +61,7 @@ COND:=	${${UNDEF} == "":?bad-assign:bad-
 
 # This line generates 2 error messages.  The first comes from evaluating the
 # malformed conditional "1 == == 2", which is reported as "Bad conditional
-# expression" by ApplyModifier_IfElse.  The variable expression containing that
+# expression" by ApplyModifier_IfElse.  The expression containing that
 # conditional therefore returns a parse error from Var_Parse, and this parse
 # error propagates to CondEvalExpression, where the "Malformed conditional"
 # comes from.
@@ -79,7 +79,7 @@ COND:=	${${UNDEF} == "":?bad-assign:bad-
 # XXX: The left-hand side is enclosed in quotes.  This results in Var_Parse
 # being called without VARE_UNDEFERR.  When ApplyModifier_IfElse
 # returns AMR_CLEANUP as result, Var_Parse returns varUndefined since the
-# value of the variable expression is still undefined.  CondParser_String is
+# value of the expression is still undefined.  CondParser_String is
 # then supposed to do proper error handling, but since varUndefined is local
 # to var.c, it cannot distinguish this return value from an ordinary empty
 # string.  The left-hand side of the comparison is therefore just an empty
@@ -98,7 +98,7 @@ COND:=	${${UNDEF} == "":?bad-assign:bad-
 .MAKEFLAGS: -d0
 
 # As of 2020-12-10, the variable "VAR" is first expanded, and the result of
-# this expansion is then taken as the condition.  To force the variable
+# this expansion is then taken as the condition.  To force the
 # expression in the condition to be evaluated at exactly the right point,
 # the '$' of the intended '${VAR}' escapes from the parser in form of the
 # expression ${:U\$}.  Because of this escaping, the variable "VAR" and thus

Index: src/usr.bin/make/unit-tests/varmod-indirect.mk
diff -u src/usr.bin/make/unit-tests/varmod-indirect.mk:1.12 src/usr.bin/make/unit-tests/varmod-indirect.mk:1.13
--- src/usr.bin/make/unit-tests/varmod-indirect.mk:1.12	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/varmod-indirect.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-indirect.mk,v 1.12 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: varmod-indirect.mk,v 1.13 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for indirect variable modifiers, such as in ${VAR:${M_modifiers}}.
 # These can be used for very basic purposes like converting a string to either
@@ -11,9 +11,9 @@
 
 
 # To apply a modifier indirectly via another variable, the whole
-# modifier must be put into a single variable expression.
+# modifier must be put into a single expression.
 # The following expression generates a parse error since its indirect
-# modifier contains more than a sole variable expression.
+# modifier contains more than a sole expression.
 #
 # expect+1: Unknown modifier "${"
 .if ${value:L:${:US}${:U,value,replacement,}} != "S,value,replacement,}"
@@ -71,20 +71,20 @@
 .endif
 
 
-# The nested variable expression expands to "tu", and this is interpreted as
+# The nested expression expands to "tu", and this is interpreted as
 # a variable modifier for the value "Upper", resulting in "UPPER".
 .if ${Upper:L:${:Utu}} != "UPPER"
 .  error
 .endif
 
-# The nested variable expression expands to "tl", and this is interpreted as
+# The nested expression expands to "tl", and this is interpreted as
 # a variable modifier for the value "Lower", resulting in "lower".
 .if ${Lower:L:${:Utl}} != "lower"
 .  error
 .endif
 
 
-# The nested variable expression is ${1 != 1:?Z:tl}, consisting of the
+# The nested expression is ${1 != 1:?Z:tl}, consisting of the
 # condition "1 != 1", the then-branch "Z" and the else-branch "tl".  Since
 # the condition evaluates to false, the then-branch is ignored (it would
 # have been an unknown modifier anyway) and the ":tl" modifier is applied.
@@ -172,10 +172,10 @@ M_NoPrimes=	${PRIMES:${M_ListToSkip}}
 # a variable assignment using ':='.
 .MAKEFLAGS: -dpv
 
-# The undefined variable expression is kept as-is.
+# The undefined expression is kept as-is.
 _:=	before ${UNDEF} after
 
-# The undefined variable expression is kept as-is.
+# The undefined expression is kept as-is.
 _:=	before ${UNDEF:${:US,a,a,}} after
 
 # XXX: The subexpression ${:U} is fully defined, therefore it is expanded.
@@ -189,7 +189,7 @@ _:=	before ${UNDEF:${:US,a,a,}} after
 _:=	before ${UNDEF:${:U}} after
 
 # XXX: This expands to ${UNDEF:Z}, which will behave differently if the
-# variable '_' is used in a context where the variable expression ${_} is
+# variable '_' is used in a context where the expression ${_} is
 # parsed but not evaluated.
 # expect+1: Unknown modifier "Z"
 _:=	before ${UNDEF:${:UZ}} after
@@ -201,7 +201,7 @@ _:=	before ${UNDEF:${:UZ}} after
 # When evaluating indirect modifiers, these modifiers may expand to ':tW',
 # which modifies the interpretation of the expression value. This modified
 # interpretation only lasts until the end of the indirect modifier, it does
-# not influence the outer variable expression.
+# not influence the outer expression.
 .if ${1 2 3:L:tW:[#]} != 1		# direct :tW applies to the :[#]
 .  error
 .endif
@@ -213,7 +213,7 @@ _:=	before ${UNDEF:${:UZ}} after
 # When evaluating indirect modifiers, these modifiers may expand to ':ts*',
 # which modifies the interpretation of the expression value. This modified
 # interpretation only lasts until the end of the indirect modifier, it does
-# not influence the outer variable expression.
+# not influence the outer expression.
 #
 # In this first expression, the direct ':ts*' has no effect since ':U' does not
 # treat the expression value as a list of words but as a single word.  It has
Index: src/usr.bin/make/unit-tests/varmod-to-separator.mk
diff -u src/usr.bin/make/unit-tests/varmod-to-separator.mk:1.12 src/usr.bin/make/unit-tests/varmod-to-separator.mk:1.13
--- src/usr.bin/make/unit-tests/varmod-to-separator.mk:1.12	Thu Jun  1 20:56:35 2023
+++ src/usr.bin/make/unit-tests/varmod-to-separator.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-to-separator.mk,v 1.12 2023/06/01 20:56:35 rillig Exp $
+# $NetBSD: varmod-to-separator.mk,v 1.13 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the :ts variable modifier, which joins the words of the variable
 # using an arbitrary character as word separator.
@@ -39,7 +39,7 @@ WORDS=	one two three four five six
 # quote though, or other special characters like dollar or backslash.
 #
 # This example also demonstrates that the closing brace is not interpreted
-# as a separator, but as the closing delimiter of the whole variable
+# as a separator, but as the closing delimiter of the whole
 # expression.
 .if ${WORDS:tu:ts} != "ONETWOTHREEFOURFIVESIX"
 .  warning Colon as separator does not work.

Index: src/usr.bin/make/unit-tests/varmod-loop.mk
diff -u src/usr.bin/make/unit-tests/varmod-loop.mk:1.23 src/usr.bin/make/unit-tests/varmod-loop.mk:1.24
--- src/usr.bin/make/unit-tests/varmod-loop.mk:1.23	Sat Feb 18 11:55:20 2023
+++ src/usr.bin/make/unit-tests/varmod-loop.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-loop.mk,v 1.23 2023/02/18 11:55:20 rillig Exp $
+# $NetBSD: varmod-loop.mk,v 1.24 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the expression modifier ':@var@body@', which replaces each word of
 # the expression with the expanded body, which may contain references to the
@@ -52,7 +52,7 @@ mod-loop-dollar:
 #
 # As of 2020-10-18, the :@ modifier is implemented by actually setting a
 # variable in the scope of the expression and deleting it again after the
-# loop.  This is different from the .for loops, which substitute the variable
+# loop.  This is different from the .for loops, which substitute the
 # expression with ${:Uvalue}, leading to different unwanted side effects.
 #
 # To make the behavior more predictable, the :@ modifier should restore the
@@ -111,7 +111,7 @@ SUBST_CONTAINING_LOOP:= ${USE_8_DOLLARS}
 # The variable SUBST_CONTAINING_LOOP therefore gets assigned the raw value
 # "$$$$ $$$$$$$$ $$$$$$$$".
 #
-# The variable expression in the condition then expands this raw stored value
+# The expression in the condition then expands this raw stored value
 # once, resulting in "$$ $$$$ $$$$".  The effects from VARE_KEEP_DOLLAR no
 # longer take place since they had only been active during the evaluation of
 # the variable assignment.

Index: src/usr.bin/make/unit-tests/varmod-match.mk
diff -u src/usr.bin/make/unit-tests/varmod-match.mk:1.16 src/usr.bin/make/unit-tests/varmod-match.mk:1.17
--- src/usr.bin/make/unit-tests/varmod-match.mk:1.16	Thu Nov  2 05:14:58 2023
+++ src/usr.bin/make/unit-tests/varmod-match.mk	Sun Nov 19 21:47:52 2023
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-match.mk,v 1.16 2023/11/02 05:14:58 rillig Exp $
+# $NetBSD: varmod-match.mk,v 1.17 2023/11/19 21:47:52 rillig Exp $
 #
 # Tests for the :M variable modifier, which filters words that match the
 # given pattern.
@@ -285,7 +285,7 @@ WORDS=		[x- x x- y yyyyy
 .endif
 
 
-# The pattern can come from a variable expression.  For single-letter
+# The pattern can come from an expression.  For single-letter
 # variables, either the short form or the long form can be used, just as
 # everywhere else.
 PRIMES=	2 3 5 7 11

Index: src/usr.bin/make/unit-tests/varparse-mod.mk
diff -u src/usr.bin/make/unit-tests/varparse-mod.mk:1.1 src/usr.bin/make/unit-tests/varparse-mod.mk:1.2
--- src/usr.bin/make/unit-tests/varparse-mod.mk:1.1	Fri Oct  2 20:34:59 2020
+++ src/usr.bin/make/unit-tests/varparse-mod.mk	Sun Nov 19 21:47:52 2023
@@ -1,6 +1,6 @@
-# $NetBSD: varparse-mod.mk,v 1.1 2020/10/02 20:34:59 rillig Exp $
+# $NetBSD: varparse-mod.mk,v 1.2 2023/11/19 21:47:52 rillig Exp $
 
-# Tests for parsing variable expressions with modifiers.
+# Tests for parsing expressions with modifiers.
 
 # As of 2020-10-02, the below condition does not result in a parse error.
 # The condition contains two separate mistakes.  The first mistake is that
@@ -8,7 +8,7 @@
 # there is a stray '}' at the end of the whole condition.
 #
 # As of 2020-10-02, the actual parse result of this condition is a single
-# variable expression with 2 modifiers. The first modifier is
+# expression with 2 modifiers. The first modifier is
 # ":!echo "\$VAR"} !".  Afterwards, the parser optionally skips a ':' (at the
 # bottom of ApplyModifiers) and continues with the next modifier, in this case
 # "= "value"", which is interpreted as a SysV substitution modifier with an

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