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commit 5962e9ab32b54d37d5cece3dea56cdd3fcf1f914
Author: Gary V. Vaughan g...@gnu.org
Date: Sat Oct 6 15:01:52 2012 +0700
tests: sanitise the libtool quote checking Autotests.
Carefully comment the maze of quoting and escaping needed to
pass through M4, $SHELL, and grep before regexp matching.
* tests/libtool.at (quote shell meta-characters in filenames):
Split backslash into a separate test group, because it needs
additional escaping.
Use grep consistently for the entire test group.
Use AT_CHECK rather than LT_AT_CHECK to avoid problems with
escaping literal $ correctly with LT_ESCAPE.
Use the correct number of backslashes for each sub-group.
Escape double-quote literals portably.
Reported by Peter Rosin.
Signed-off-by: Gary V. Vaughan g...@gnu.org
---
Summary of changes:
tests/libtool.at | 44 +++-
1 files changed, 31 insertions(+), 13 deletions(-)
diff --git a/tests/libtool.at b/tests/libtool.at
index fafec37..4ab405c 100755
--- a/tests/libtool.at
+++ b/tests/libtool.at
@@ -95,35 +95,53 @@ for mode in compile link install; do
;;
esac
- # Trivial.
- LT_AT_CHECK([$LIBTOOL -n --mode=$mode $preargs $preflag$flag:test
$postargs],
+
+ # Trivial...
+
+ AT_CHECK([$LIBTOOL -n --mode=$mode $preargs $preflag$flag:test $postargs],
[0], [stdout])
# We must not attempt to match $preargs in the output, because libtool
# may modify them. For example, on Cygwin, ``libtool --mode=link gcc -o
# foo foo.o'' becomes ``gcc -o foo.exe foo.o''.
- LT_AT_CHECK([$EGREP $mode:.*$match_preflag$flag:test stdout], [0],
[ignore])
+ AT_CHECK([grep $mode:.*$match_preflag$flag:test stdout], [0], [ignore])
+
- # Metacharacters that should be backslashified.
- for mchar in \ \` \$ \\; do
-LT_AT_CHECK([$LIBTOOL -n --mode=$mode $preargs
$preflag$flag$mchar:test$mchar $postargs],
+ # Non-trivial...
+
+ # Backslash needs to be double-escaped: one escape is stripped as the shell
+ # collects arguments for grep ( = ), and then another escape
+ # is stripped by grep itself ( = \\) before the resulting expression is
+ # matched (grepping for \\ matches \):
+ AT_CHECK([$LIBTOOL -n --mode=$mode $preargs $preflag$flag\\:test\\
$postargs],
+ [0], [stdout])
+ # NOTE: we use ...''... to insert a literal quote into the expression
+ # because ...\... is not expanded consistently by all shells.
+ AT_CHECK([grep $mode:.*$match_preflag'\?'$flag:test'\?
' stdout],
+ [0], [ignore])
+
+ # Shell metacharacters that should be backslashified by libtool.
+ for mchar in \ \` \$; do
+AT_CHECK([$LIBTOOL -n --mode=$mode $preargs
$preflag$flag$mchar:test$mchar $postargs],
[0], [stdout])
-LT_AT_CHECK([$EGREP
$mode:.*$match_preflag\?$flag\\$mchar:test\\$mchar\? stdout], [0],
[ignore])
+AT_CHECK([grep
$mode:.*$match_preflag''\?$flag$mchar:test$mchar''\? stdout],
[0], [ignore])
done
- # Metacharacters that should be double quoted, and need escaping for grep
+ # Shell metacharacters that should be double quoted by libtool, and need
+ # backslash escaping for input to grep.
for mchar in @:@ @:@ ^ *; do
-LT_AT_CHECK([$LIBTOOL -n --mode=$mode $preargs
$preflag$flag$mchar:test$mchar $postargs],
+AT_CHECK([$LIBTOOL -n --mode=$mode $preargs
$preflag$flag$mchar:test$mchar $postargs],
[0], [stdout])
-LT_AT_CHECK([grep $mode:.*$match_preflag\$flag\\$mchar:test\\$mchar\
stdout], [0], [ignore])
+AT_CHECK([grep $mode:.*$match_preflag\$flag\\$mchar:test\\$mchar\
stdout], [0], [ignore])
done
- # Metacharacters that should be double quoted, that are not special to grep.
+ # Metacharacters that should be double quoted by libtool, but which are
+ # not special to grep (NOTE: Some of these ARE special to $EGREP!!).
for mchar in ~ # ( ) { } | ; ? '
; do
-LT_AT_CHECK([$LIBTOOL -n --mode=$mode $preargs
$preflag$flag$mchar:test$mchar $postargs],
+AT_CHECK([$LIBTOOL -n --mode=$mode $preargs
$preflag$flag$mchar:test$mchar $postargs],
[0], [stdout])
-LT_AT_CHECK([grep $mode:.*$match_preflag\$flag$mchar:test$mchar\
stdout], [0], [ignore])
+AT_CHECK([grep $mode:.*$match_preflag\$flag$mchar:test$mchar\
