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[PATCH] make the sample pre-commit hook script reject names with newlines, too

From
Jim Meyering <jim@meyering.net>
Date
Oct 22, 2011, 17:19 UTC
Message-ID
<87obx9eygk.fsf@rho.meyering.net>

The sample pre-commit hook script would fail to reject a file name like "a\nb" because of the way newlines are handled in "$(...)". Adjust the test to count filtered bytes and require there be 0. Also print all diagnostics to standard error, not stdout, so they will actually be seen.

Signed-off-by: Jim Meyering <meyering@redhat.com>
---
 templates/hooks--pre-commit.sample |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/templates/hooks--pre-commit.sample b/templates/hooks--pre-commit.sample
index b187c4b..1addec5 100755
--- a/templates/hooks--pre-commit.sample
+++ b/templates/hooks--pre-commit.sample
@@ -18,6 +18,9 @@ fi
 # If you want to allow non-ascii filenames set this variable to true.
 allownonascii=$(git config hooks.allownonascii)

+# Redirect output to stderr.
+exec 1>&2
+
 # Cross platform projects tend to avoid non-ascii filenames; prevent
 # them from being added to the repository. We exploit the fact that the
 # printable range starts at the space character and ends with tilde.
@@ -26,7 +29,7 @@ if [ "$allownonascii" != "true" ] &&
 	# even required, for portability to Solaris 10's /usr/bin/tr), since
 	# the square bracket bytes happen to fall in the designated range.
 	test "$(git diff --cached --name-only --diff-filter=A -z $against |
-	  LC_ALL=C tr -d '[ -~]\0')"
+	  LC_ALL=C tr -d '[ -~]\0' | wc -c)" != 0
 then
 	echo "Error: Attempt to add a non-ascii file name."
 	echo
@@ -43,4 +46,5 @@ then
 	exit 1
 fi

+# If there are whitespace errors, print the offending file names and fail.
 exec git diff-index --check --cached $against --
--
1.7.7.419.g87009
Next: Andreas Schwab
Message 1 of 3 in “make the sample pre-commit hook script reject names with newlines, too”
  1. make the sample pre-commit hook script reject names with newlines, tooJim Meyering, Oct 22, 2011
  2. Andreas SchwabOct 22, 2011
  3. Jim MeyeringOct 22, 2011

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