1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
| | #!/bin/sh
# Check the format of GNU Emacs change log entries.
# Copyright 2014-2024 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 <https://www.gnu.org/licenses/>.
# Written by Paul Eggert.
# Prefer gawk if available, as it handles NUL bytes properly.
if type gawk >/dev/null 2>&1; then
awk=gawk
else
awk=awk
fi
# 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_format='\302\242\n'
cent_sign=`printf "$cent_sign_utf8_format"`
print_at_sign='BEGIN {print substr("'$cent_sign'@", 2)}'
at_sign=`$awk "$print_at_sign" </dev/null 2>/dev/null`
if test "$at_sign" != @; then
at_sign=`LC_ALL=en_US.UTF-8 $awk "$print_at_sign" </dev/null 2>/dev/null`
if test "$at_sign" = @; then
LC_ALL=en_US.UTF-8
else
LC_ALL=C
fi
export LC_ALL
fi
# Check the log entry.
exec $awk -v at_sign="$at_sign" -v cent_sign="$cent_sign" -v file="$1" '
BEGIN {
# These regular expressions assume traditional Unix unibyte behavior.
# They are needed for old or broken versions of awk, e.g.,
# mawk 1.3.3 (1996), or gawk on MSYS (2015), and/or for systems that
# cannot use UTF-8 as the codeset for the locale.
space = "[ \f\n\r\t\v]"
non_space = "[^ \f\n\r\t\v]"
# The non_print below rejects control characters and surrogates
# UTF-8 for: 0x01-0x1f 0x7f 0x80-0x9f 0xd800-0xdbff 0xdc00-0xdfff
non_print = "[\1-\37\177]|\302[\200-\237]|\355[\240-\277][\200-\277]"
# Prefer POSIX regular expressions if available, as they do a
# better job of checking. Similarly, prefer POSIX negated
# expressions if UTF-8 also works.
if (" " ~ /[[:space:]]/) {
space = "[[:space:]]"
if (at_sign == "@" && cent_sign ~ /^[[:print:]]$/) {
non_space = "[^[:space:]]"
non_print = "[^[:print:]]"
}
}
c_lower = "abcdefghijklmnopqrstuvwxyz"
unsafe_gnu_url = "(http|ftp)://([" c_lower ".]*\\.)?(gnu|fsf)\\.org"
}
{ input[NR] = $0 }
/^#/ {
# Ignore every line after a scissors line.
if (/^# *---* *(>[8%]|[8%]<) *---* *$/) { exit }
# Ignore comment lines.
next
}
!/^.*$/ {
print "Invalid character (not UTF-8) in commit message"
status = 1
}
nlines == 0 && $0 !~ non_space { next }
{ nlines++ }
nlines == 1 {
# Ignore special markers used by "git rebase --autosquash".
if (! sub(/^fixup! /, ""))
sub(/^squash! /, "")
if ($0 ~ "^" space) {
print "White space at start of commit message'\''s first line"
status = 1
}
}
nlines == 2 && $0 ~ non_space {
print "Nonempty second line in commit message"
status = 1
}
{
# Expand tabs to spaces for length calculations etc.
while (match($0, /\t/)) {
before_tab = substr($0, 1, RSTART - 1)
after_tab = substr($0, RSTART + 1)
$0 = sprintf("%s%*s%s", before_tab, 8 - (RSTART - 1) % 8, "", after_tab)
}
}
78 < length && $0 ~ space {
print "Line longer than 78 characters in commit message"
status = 1
}
140 < length {
print "Word longer than 140 characters in commit message"
status = 1
}
/^Signed-off-by: / {
print "'\''Signed-off-by:'\'' in commit message"
status = 1
}
$0 ~ unsafe_gnu_url {
needs_rewriting = 1
}
$0 ~ non_print {
print "Unprintable character in commit message"
status = 1
}
END {
if (nlines == 0) {
print "Empty commit message"
status = 1
}
if (status == 0 && needs_rewriting) {
for (i = 1; i <= NR; i++) {
line = input[i]
while (match(line, unsafe_gnu_url)) {
prefix = substr(line, 1, RSTART - 1)
suffix = substr(line, RSTART)
line = prefix "https:" substr(suffix, 5 + (suffix ~ /^http:/))
}
print line >file
}
if (close(file) != 0) {
print "Cannot rewrite: " file
status = 1
}
}
if (status != 0) {
print "Commit aborted; please see the file 'CONTRIBUTE'"
}
exit status
}
' <"$1"
|