gbranden pushed a commit to branch master
in repository groff.
commit b039f8c3d1d2c00e3bb408768af2f8025b4c317c
Author: G. Branden Robinson <[email protected]>
AuthorDate: Sat Mar 29 22:51:05 2025 -0500
[troff]: Drop warning diagnostic.
* src/roff/troff/input.cpp (token::next): Drop warning diagnostic. DWB
troff accepts a negative argument to the `\N` escape sequence; so
should we. (Interestingly, it seems to be difficult or impossible to
get Heirloom Doctools to emit a "trout" `N` command--some table maps
negative character indices to special character names. For instance,
we expect `N-1` but get `Chy`. If no mapping exists for `\N`'s
argument, it emits _no_ trout command for the character.)
---
ChangeLog | 11 +++++++++++
src/roff/troff/input.cpp | 5 -----
2 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index ec672384e..7c6421437 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -33,6 +33,17 @@
If none are found, use /bin/sh anyway and surrender to our
run-time fate.
+2025-03-29 G. Branden Robinson <[email protected]>
+
+ * src/roff/troff/input.cpp (token::next): Drop warning
+ diagnostic. DWB troff accepts a negative argument to the `\N`
+ escape sequence; so should we. (Interestingly, it seems to be
+ difficult or impossible to get Heirloom Doctools to emit a
+ "trout" `N` command--some table maps negative character indices
+ to special character names. For instance, we expect `N-1` but
+ get `Chy`. If no mapping exists for `\N`'s argument, it emits
+ _no_ trout command for the character.)
+
2025-03-29 G. Branden Robinson <[email protected]>
* m4/groff.m4 (GROFF_PROG_SH_IS_POSIX_8_CONFORMING): Rename
diff --git a/src/roff/troff/input.cpp b/src/roff/troff/input.cpp
index 0530e4df2..da3311fac 100644
--- a/src/roff/troff/input.cpp
+++ b/src/roff/troff/input.cpp
@@ -2425,11 +2425,6 @@ void token::next()
case 'N':
if (!read_delimited_number(&val, 0))
break;
- if (val < 0) {
- warning(WARN_CHAR, "character with negative index %1 is"
- " invalid; ignoring", val);
- break;
- }
type = TOKEN_INDEXED_CHAR;
return;
case 'o':
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