diff options
Diffstat (limited to 'build-aux/git-hooks/commit-msg')
-rwxr-xr-x | build-aux/git-hooks/commit-msg | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/build-aux/git-hooks/commit-msg b/build-aux/git-hooks/commit-msg new file mode 100755 index 0000000000..6a09eddf88 --- /dev/null +++ b/build-aux/git-hooks/commit-msg @@ -0,0 +1,90 @@ +#!/bin/sh +# Check the format of GNU Emacs change log entries. + +# Copyright 2014 Free Software Foundation, Inc. + +# This file is part of GNU Emacs. + +# GNU Emacs is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# GNU Emacs is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. + +# Written by Paul Eggert. + +# Use a UTF-8 locale if available, so that the UTF-8 check works. +# Use U+00A2 CENT SIGN to test whether the locale works. +cent_sign_utf8_octal='\302\242' +at_sign=` + printf "${cent_sign_utf8_octal}@" | + awk '{print substr($0, 2)}' 2>/dev/null +` +if test "$at_sign" != @; then + at_sign=` + printf "${cent_sign_utf8_octal}@" | + LC_ALL=en_US.utf8 awk '{print substr($0, 2)}' 2>/dev/null + ` + if test "$at_sign" = @; then + LC_ALL=en_US.utf8; export LC_ALL + fi +fi + +# Check the log entry. +exec awk ' + /^#/ { next } + + !/^.*$/ { + print "Invalid character (not UTF-8)" + status = 1 + } + + nlines == 0 && !/[^[:space:]]/ { next } + + { nlines++ } + + nlines == 1 && /^[[:space:]]/ { + print "White space at start of first line" + status = 1 + } + + nlines == 2 && /[^[:space:]]/ { + print "Nonempty second line" + status = 1 + } + + /[[:cntrl:]]/ { + print "Text contains control character; please use spaces instead of tabs" + status = 1 + } + + 72 < length && /[[:space:]]/ { + print "Line longer than 72 characters" + status = 1 + } + + 140 < length { + print "Word longer than 140 characters" + status = 1 + } + + /^Signed-off-by: / { + print "'Signed-off-by:' present" + status = 1 + } + + END { + if (nlines == 0) { + print "Empty change log entry" + status = 1 + } + exit status + } +' <"$1" |