chainlint.sed recognizes multi-line quoted strings within subshells:
echo "abc
def" >out &&
so it can avoid incorrectly classifying lines internal to the string as
breaking the &&-chain. To identify the first line of a multi-line
string, it checks if the line contains a single quote. However, this is
fragile and can be easily fooled by a line containing multiple strings:
echo "xyz" "abc
def" >out &&
Make detection more robust by checking for an odd number of quotes
rather than only a single one.
(Escaped quotes are not handled, but support may be added later.)
The original multi-line string recognizer rather cavalierly threw away
all but the final quote, whereas the new one is careful to retain all
quotes, so the "expected" output of a couple existing chainlint tests is
updated to account for this new behavior.
Signed-off-by: Eric Sunshine <[email protected]>
---
t/chainlint.sed | 32 +++++++++++++------
t/chainlint/here-doc-multi-line-string.expect | 2 +-
t/chainlint/multi-line-string.expect | 10 ++++--
t/chainlint/multi-line-string.test | 12 +++++++
4 files changed, 43 insertions(+), 13 deletions(-)
diff --git a/t/chainlint.sed b/t/chainlint.sed
index 6c891bf383..338163c2f5 100644
--- a/t/chainlint.sed
+++ b/t/chainlint.sed
@@ -151,10 +151,10 @@ s/.*\n//
:slurp
# incomplete line "...\"
/\\$/bincomplete
-# multi-line quoted string "...\n..."
-/^[^"]*"[^"]*$/bdqstring
-# multi-line quoted string '...\n...' (but not contraction in string "it's so")
-/^[^']*'[^']*$/{
+# multi-line quoted string "...\n..."?
+/"/bdqstring
+# multi-line quoted string '...\n...'? (but not contraction in string "it's")
+/'/{
/"[^'"]*'[^'"]*"/!bsqstring
}
:folded
@@ -250,20 +250,32 @@ N
s/\\\n//
bslurp
-# found multi-line double-quoted string "...\n..." -- slurp until end of string
+# check for multi-line double-quoted string "...\n..." -- fold to one line
:dqstring
-s/"//g
+# remove all quote pairs
+s/"\([^"]*\)"/@!\1@!/g
+# done if no dangling quote
+/"/!bdqdone
+# otherwise, slurp next line and try again
N
s/\n//
-/"/!bdqstring
+bdqstring
+:dqdone
+s/@!/"/g
bfolded
-# found multi-line single-quoted string '...\n...' -- slurp until end of string
+# check for multi-line single-quoted string '...\n...' -- fold to one line
:sqstring
-s/'//g
+# remove all quote pairs
+s/'\([^']*\)'/@!\1@!/g
+# done if no dangling quote
+/'/!bsqdone
+# otherwise, slurp next line and try again
N
s/\n//
-/'/!bsqstring
+bsqstring
+:sqdone
+s/@!/'/g
bfolded
# found here-doc -- swallow it to avoid false hits within its body (but keep
diff --git a/t/chainlint/here-doc-multi-line-string.expect
b/t/chainlint/here-doc-multi-line-string.expect
index 1e5b724b9d..32038a070c 100644
--- a/t/chainlint/here-doc-multi-line-string.expect
+++ b/t/chainlint/here-doc-multi-line-string.expect
@@ -1,4 +1,4 @@
(
-?!AMP?! cat && echo multi-line string"
+?!AMP?! cat && echo "multi-line string"
bap
>)
diff --git a/t/chainlint/multi-line-string.expect
b/t/chainlint/multi-line-string.expect
index 8334c4cc8e..170cb59993 100644
--- a/t/chainlint/multi-line-string.expect
+++ b/t/chainlint/multi-line-string.expect
@@ -1,9 +1,15 @@
(
- x=line 1 line 2 line 3" &&
-?!AMP?! y=line 1 line2'
+ x="line 1 line 2 line 3" &&
+?!AMP?! y='line 1 line2'
foobar
>) &&
(
echo "there's nothing to see here" &&
exit
+>) &&
+(
+ echo "xyz" "abc def ghi" &&
+ echo 'xyz' 'abc def ghi' &&
+ echo 'xyz' "abc def ghi" &&
+ barfoo
>)
diff --git a/t/chainlint/multi-line-string.test
b/t/chainlint/multi-line-string.test
index 14cb44d51c..287ab89705 100644
--- a/t/chainlint/multi-line-string.test
+++ b/t/chainlint/multi-line-string.test
@@ -12,4 +12,16 @@
# LINT: starting multi-line single-quoted string
echo "there's nothing to see here" &&
exit
+) &&
+(
+ echo "xyz" "abc
+ def
+ ghi" &&
+ echo 'xyz' 'abc
+ def
+ ghi' &&
+ echo 'xyz' "abc
+ def
+ ghi" &&
+ barfoo
)
--
2.18.0.758.g1932418f46
