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git-commit-vandalism/git-commit.sh
Shawn O. Pearce aeb80c70ec Suggest use of "git add file1 file2" when there is nothing to commit. 
If a user modifies files and runs 'git commit' (without the very
useful -a option) and they have not yet updated the index they
are probably coming from another SCM-like tool which would perform
the same as 'git commit -a' in this case.  Showing the user their
current status and a final line of "nothing to commit" is not very
reassuring, as the user might believe that Git did not recognize
their files were modified.

Instead we can suggest as part of the 'nothing to commit' message
that the user invoke 'git add' to add files to their next commit.

Suggested by Andy Parkins' Git 'niggles' list
(<200612132237.10051.andyparkins@gmail.com>).

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-15 22:31:01 -08:00

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#!/bin/sh
#
# Copyright (c) 2005 Linus Torvalds
# Copyright (c) 2006 Junio C Hamano
USAGE='[-a] [-s] [-v] [--no-verify] [-m <message> | -F <logfile> | (-C|-c) <commit>] [-u] [--amend] [-e] [--author <author>] [[-i | -o] <path>...]'
SUBDIRECTORY_OK=Yes
. git-sh-setup
git-rev-parse --verify HEAD >/dev/null 2>&1 || initial_commit=t
branch=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD)
case "$0" in
*status)
status_only=t
unmerged_ok_if_status=--unmerged ;;
*commit)
status_only=
unmerged_ok_if_status= ;;
esac
refuse_partial () {
echo >&2 "$1"
echo >&2 "You might have meant to say 'git commit -i paths...', perhaps?"
exit 1
}
THIS_INDEX="$GIT_DIR/index"
NEXT_INDEX="$GIT_DIR/next-index$$"
rm -f "$NEXT_INDEX"
save_index () {
cp -p "$THIS_INDEX" "$NEXT_INDEX"
}
run_status () {
# If TMP_INDEX is defined, that means we are doing
# "--only" partial commit, and that index file is used
# to build the tree for the commit. Otherwise, if
# NEXT_INDEX exists, that is the index file used to
# make the commit. Otherwise we are using as-is commit
# so the regular index file is what we use to compare.
if test '' != "$TMP_INDEX"
then
GIT_INDEX_FILE="$TMP_INDEX"
export GIT_INDEX_FILE
elif test -f "$NEXT_INDEX"
then
GIT_INDEX_FILE="$NEXT_INDEX"
export GIT_INDEX_FILE
fi
case "$status_only" in
t) color= ;;
*) color=--nocolor ;;
esac
git-runstatus ${color} \
${verbose:+--verbose} \
${amend:+--amend} \
${untracked_files:+--untracked}
}
trap '
test -z "$TMP_INDEX" || {
test -f "$TMP_INDEX" && rm -f "$TMP_INDEX"
}
rm -f "$NEXT_INDEX"
' 0
################################################################
# Command line argument parsing and sanity checking
all=
also=
only=
logfile=
use_commit=
amend=
edit_flag=
no_edit=
log_given=
log_message=
verify=t
quiet=
verbose=
signoff=
force_author=
only_include_assumed=
untracked_files=
while case "$#" in 0) break;; esac
do
case "$1" in
-F|--F|-f|--f|--fi|--fil|--file)
case "$#" in 1) usage ;; esac
shift
no_edit=t
log_given=t$log_given
logfile="$1"
shift
;;
-F*|-f*)
no_edit=t
log_given=t$log_given
logfile=`expr "z$1" : 'z-[Ff]\(.*\)'`
shift
;;
--F=*|--f=*|--fi=*|--fil=*|--file=*)
no_edit=t
log_given=t$log_given
logfile=`expr "z$1" : 'z-[^=]*=\(.*\)'`
shift
;;
-a|--a|--al|--all)
all=t
shift
;;
--au=*|--aut=*|--auth=*|--autho=*|--author=*)
force_author=`expr "z$1" : 'z-[^=]*=\(.*\)'`
shift
;;
--au|--aut|--auth|--autho|--author)
case "$#" in 1) usage ;; esac
shift
force_author="$1"
shift
;;
-e|--e|--ed|--edi|--edit)
edit_flag=t
shift
;;
-i|--i|--in|--inc|--incl|--inclu|--includ|--include)
also=t
shift
;;
-o|--o|--on|--onl|--only)
only=t
shift
;;
-m|--m|--me|--mes|--mess|--messa|--messag|--message)
case "$#" in 1) usage ;; esac
shift
log_given=m$log_given
if test "$log_message" = ''
then
log_message="$1"
else
log_message="$log_message
$1"
fi
no_edit=t
shift
;;
-m*)
log_given=m$log_given
if test "$log_message" = ''
then
log_message=`expr "z$1" : 'z-m\(.*\)'`
else
log_message="$log_message
`expr "z$1" : 'z-m\(.*\)'`"
fi
no_edit=t
shift
;;
--m=*|--me=*|--mes=*|--mess=*|--messa=*|--messag=*|--message=*)
log_given=m$log_given
if test "$log_message" = ''
then
log_message=`expr "z$1" : 'z-[^=]*=\(.*\)'`
else
log_message="$log_message
`expr "z$1" : 'zq-[^=]*=\(.*\)'`"
fi
no_edit=t
shift
;;
-n|--n|--no|--no-|--no-v|--no-ve|--no-ver|--no-veri|--no-verif|\
--no-verify)
verify=
shift
;;
--a|--am|--ame|--amen|--amend)
amend=t
log_given=t$log_given
use_commit=HEAD
shift
;;
-c)
case "$#" in 1) usage ;; esac
shift
log_given=t$log_given
use_commit="$1"
no_edit=
shift
;;
--ree=*|--reed=*|--reedi=*|--reedit=*|--reedit-=*|--reedit-m=*|\
--reedit-me=*|--reedit-mes=*|--reedit-mess=*|--reedit-messa=*|\
--reedit-messag=*|--reedit-message=*)
log_given=t$log_given
use_commit=`expr "z$1" : 'z-[^=]*=\(.*\)'`
no_edit=
shift
;;
--ree|--reed|--reedi|--reedit|--reedit-|--reedit-m|--reedit-me|\
--reedit-mes|--reedit-mess|--reedit-messa|--reedit-messag|\
--reedit-message)
case "$#" in 1) usage ;; esac
shift
log_given=t$log_given
use_commit="$1"
no_edit=
shift
;;
-C)
case "$#" in 1) usage ;; esac
shift
log_given=t$log_given
use_commit="$1"
no_edit=t
shift
;;
--reu=*|--reus=*|--reuse=*|--reuse-=*|--reuse-m=*|--reuse-me=*|\
--reuse-mes=*|--reuse-mess=*|--reuse-messa=*|--reuse-messag=*|\
--reuse-message=*)
log_given=t$log_given
use_commit=`expr "z$1" : 'z-[^=]*=\(.*\)'`
no_edit=t
shift
;;
--reu|--reus|--reuse|--reuse-|--reuse-m|--reuse-me|--reuse-mes|\
--reuse-mess|--reuse-messa|--reuse-messag|--reuse-message)
case "$#" in 1) usage ;; esac
shift
log_given=t$log_given
use_commit="$1"
no_edit=t
shift
;;
-s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
signoff=t
shift
;;
-q|--q|--qu|--qui|--quie|--quiet)
quiet=t
shift
;;
-v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
verbose=t
shift
;;
-u|--u|--un|--unt|--untr|--untra|--untrac|--untrack|--untracke|\
--untracked|--untracked-|--untracked-f|--untracked-fi|--untracked-fil|\
--untracked-file|--untracked-files)
untracked_files=t
shift
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
;;
esac
done
case "$edit_flag" in t) no_edit= ;; esac
################################################################
# Sanity check options
case "$amend,$initial_commit" in
t,t)
die "You do not have anything to amend." ;;
t,)
if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
die "You are in the middle of a merge -- cannot amend."
fi ;;
esac
case "$log_given" in
tt*)
die "Only one of -c/-C/-F can be used." ;;
*tm*|*mt*)
die "Option -m cannot be combined with -c/-C/-F." ;;
esac
case "$#,$also,$only,$amend" in
*,t,t,*)
die "Only one of --include/--only can be used." ;;
0,t,,* | 0,,t,)
die "No paths with --include/--only does not make sense." ;;
0,,t,t)
only_include_assumed="# Clever... amending the last one with dirty index." ;;
0,,,*)
;;
*,,,*)
only_include_assumed="# Explicit paths specified without -i nor -o; assuming --only paths..."
also=
;;
esac
unset only
case "$all,$also,$#" in
t,t,*)
die "Cannot use -a and -i at the same time." ;;
t,,[1-9]*)
die "Paths with -a does not make sense." ;;
,t,0)
die "No paths with -i does not make sense." ;;
esac
################################################################
# Prepare index to have a tree to be committed
TOP=`git-rev-parse --show-cdup`
if test -z "$TOP"
then
TOP=./
fi
case "$all,$also" in
t,)
save_index &&
(
cd "$TOP"
GIT_INDEX_FILE="$NEXT_INDEX"
export GIT_INDEX_FILE
git-diff-files --name-only -z |
git-update-index --remove -z --stdin
)
;;
,t)
save_index &&
git-ls-files --error-unmatch -- "$@" >/dev/null || exit
git-diff-files --name-only -z -- "$@" |
(
cd "$TOP"
GIT_INDEX_FILE="$NEXT_INDEX"
export GIT_INDEX_FILE
git-update-index --remove -z --stdin
)
;;
,)
case "$#" in
0)
;; # commit as-is
*)
if test -f "$GIT_DIR/MERGE_HEAD"
then
refuse_partial "Cannot do a partial commit during a merge."
fi
TMP_INDEX="$GIT_DIR/tmp-index$$"
commit_only=`git-ls-files --error-unmatch -- "$@"` || exit
# Build a temporary index and update the real index
# the same way.
if test -z "$initial_commit"
then
cp "$THIS_INDEX" "$TMP_INDEX"
GIT_INDEX_FILE="$TMP_INDEX" git-read-tree -m HEAD
else
rm -f "$TMP_INDEX"
fi || exit
echo "$commit_only" |
GIT_INDEX_FILE="$TMP_INDEX" \
git-update-index --add --remove --stdin &&
save_index &&
echo "$commit_only" |
(
GIT_INDEX_FILE="$NEXT_INDEX"
export GIT_INDEX_FILE
git-update-index --remove --stdin
) || exit
;;
esac
;;
esac
################################################################
# If we do as-is commit, the index file will be THIS_INDEX,
# otherwise NEXT_INDEX after we make this commit. We leave
# the index as is if we abort.
if test -f "$NEXT_INDEX"
then
USE_INDEX="$NEXT_INDEX"
else
USE_INDEX="$THIS_INDEX"
fi
GIT_INDEX_FILE="$USE_INDEX" \
git-update-index -q $unmerged_ok_if_status --refresh || exit
################################################################
# If the request is status, just show it and exit.
case "$0" in
*status)
run_status
exit $?
esac
################################################################
# Grab commit message, write out tree and make commit.
if test t = "$verify" && test -x "$GIT_DIR"/hooks/pre-commit
then
if test "$TMP_INDEX"
then
GIT_INDEX_FILE="$TMP_INDEX" "$GIT_DIR"/hooks/pre-commit
else
GIT_INDEX_FILE="$USE_INDEX" "$GIT_DIR"/hooks/pre-commit
fi || exit
fi
if test "$log_message" != ''
then
echo "$log_message"
elif test "$logfile" != ""
then
if test "$logfile" = -
then
test -t 0 &&
echo >&2 "(reading log message from standard input)"
cat
else
cat <"$logfile"
fi
elif test "$use_commit" != ""
then
git-cat-file commit "$use_commit" | sed -e '1,/^$/d'
elif test -f "$GIT_DIR/MERGE_MSG"
then
cat "$GIT_DIR/MERGE_MSG"
elif test -f "$GIT_DIR/SQUASH_MSG"
then
cat "$GIT_DIR/SQUASH_MSG"
fi | git-stripspace >"$GIT_DIR"/COMMIT_EDITMSG
case "$signoff" in
t)
{
echo
git-var GIT_COMMITTER_IDENT | sed -e '
s/>.*/>/
s/^/Signed-off-by: /
'
} >>"$GIT_DIR"/COMMIT_EDITMSG
;;
esac
if test -f "$GIT_DIR/MERGE_HEAD" && test -z "$no_edit"; then
echo "#"
echo "# It looks like you may be committing a MERGE."
echo "# If this is not correct, please remove the file"
echo "# $GIT_DIR/MERGE_HEAD"
echo "# and try again"
echo "#"
fi >>"$GIT_DIR"/COMMIT_EDITMSG
# Author
if test '' != "$force_author"
then
GIT_AUTHOR_NAME=`expr "z$force_author" : 'z\(.*[^ ]\) *<.*'` &&
GIT_AUTHOR_EMAIL=`expr "z$force_author" : '.*\(<.*\)'` &&
test '' != "$GIT_AUTHOR_NAME" &&
test '' != "$GIT_AUTHOR_EMAIL" ||
die "malformed --author parameter"
export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL
elif test '' != "$use_commit"
then
pick_author_script='
/^author /{
s/'\''/'\''\\'\'\''/g
h
s/^author \([^<]*\) <[^>]*> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_NAME='\''&'\''/p
g
s/^author [^<]* <\([^>]*\)> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
g
s/^author [^<]* <[^>]*> \(.*\)$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_DATE='\''&'\''/p
q
}
'
set_author_env=`git-cat-file commit "$use_commit" |
LANG=C LC_ALL=C sed -ne "$pick_author_script"`
eval "$set_author_env"
export GIT_AUTHOR_NAME
export GIT_AUTHOR_EMAIL
export GIT_AUTHOR_DATE
fi
PARENTS="-p HEAD"
if test -z "$initial_commit"
then
rloga='commit'
if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
rloga='commit (merge)'
PARENTS="-p HEAD "`sed -e 's/^/-p /' "$GIT_DIR/MERGE_HEAD"`
elif test -n "$amend"; then
rloga='commit (amend)'
PARENTS=$(git-cat-file commit HEAD |
sed -n -e '/^$/q' -e 's/^parent /-p /p')
fi
current="$(git-rev-parse --verify HEAD)"
else
if [ -z "$(git-ls-files)" ]; then
echo >&2 'nothing to commit (use "git add file1 file2" to include for commit)'
exit 1
fi
PARENTS=""
rloga='commit (initial)'
current=''
fi
if test -z "$no_edit"
then
{
echo ""
echo "# Please enter the commit message for your changes."
echo "# (Comment lines starting with '#' will not be included)"
test -z "$only_include_assumed" || echo "$only_include_assumed"
run_status
} >>"$GIT_DIR"/COMMIT_EDITMSG
else
# we need to check if there is anything to commit
run_status >/dev/null
fi
if [ "$?" != "0" -a ! -f "$GIT_DIR/MERGE_HEAD" -a -z "$amend" ]
then
rm -f "$GIT_DIR/COMMIT_EDITMSG" "$GIT_DIR/SQUASH_MSG"
run_status
exit 1
fi
case "$no_edit" in
'')
case "${VISUAL:-$EDITOR},$TERM" in
,dumb)
echo >&2 "Terminal is dumb but no VISUAL nor EDITOR defined."
echo >&2 "Please supply the commit log message using either"
echo >&2 "-m or -F option. A boilerplate log message has"
echo >&2 "been prepared in $GIT_DIR/COMMIT_EDITMSG"
exit 1
;;
esac
git-var GIT_AUTHOR_IDENT > /dev/null || die
git-var GIT_COMMITTER_IDENT > /dev/null || die
${VISUAL:-${EDITOR:-vi}} "$GIT_DIR/COMMIT_EDITMSG"
;;
esac
case "$verify" in
t)
if test -x "$GIT_DIR"/hooks/commit-msg
then
"$GIT_DIR"/hooks/commit-msg "$GIT_DIR"/COMMIT_EDITMSG || exit
fi
esac
if test -z "$no_edit"
then
sed -e '
/^diff --git a\/.*/{
s///
q
}
/^#/d
' "$GIT_DIR"/COMMIT_EDITMSG
else
cat "$GIT_DIR"/COMMIT_EDITMSG
fi |
git-stripspace >"$GIT_DIR"/COMMIT_MSG
if cnt=`grep -v -i '^Signed-off-by' "$GIT_DIR"/COMMIT_MSG |
git-stripspace |
wc -l` &&
test 0 -lt $cnt
then
if test -z "$TMP_INDEX"
then
tree=$(GIT_INDEX_FILE="$USE_INDEX" git-write-tree)
else
tree=$(GIT_INDEX_FILE="$TMP_INDEX" git-write-tree) &&
rm -f "$TMP_INDEX"
fi &&
commit=$(cat "$GIT_DIR"/COMMIT_MSG | git-commit-tree $tree $PARENTS) &&
rlogm=$(sed -e 1q "$GIT_DIR"/COMMIT_MSG) &&
git-update-ref -m "$rloga: $rlogm" HEAD $commit "$current" &&
rm -f -- "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/MERGE_MSG" &&
if test -f "$NEXT_INDEX"
then
mv "$NEXT_INDEX" "$THIS_INDEX"
else
: ;# happy
fi
else
echo >&2 "* no commit message? aborting commit."
false
fi
ret="$?"
rm -f "$GIT_DIR/COMMIT_MSG" "$GIT_DIR/COMMIT_EDITMSG" "$GIT_DIR/SQUASH_MSG"
if test -d "$GIT_DIR/rr-cache"
then
git-rerere
fi
if test "$ret" = 0
then
if test -x "$GIT_DIR"/hooks/post-commit
then
"$GIT_DIR"/hooks/post-commit
fi
if test -z "$quiet"
then
echo "Created${initial_commit:+ initial} commit $commit"
git-diff-tree --shortstat --summary --root --no-commit-id HEAD
fi
fi
exit "$ret"
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