aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorJunio C Hamano <gitster@pobox.com>2012-07-23 14:16:12 -0700
committerJunio C Hamano <gitster@pobox.com>2012-07-23 14:42:39 -0700
commit109859e27445a3ad12eb8f8cba43a5aa8f701733 (patch)
tree669e753fa602ccdfcc2a517b53a7a70800cdf599
parente6dfbcf12b0e70897818cb36903de0625931a5c6 (diff)
downloadgit-109859e27445a3ad12eb8f8cba43a5aa8f701733.tar.gz
git-109859e27445a3ad12eb8f8cba43a5aa8f701733.tar.xz
mergetool: support --tool-help option like difftool does
This way we do not have to risk the list of tools going out of sync between the implementation and the documentation. In the same spirit as bf73fc2 (difftool: print list of valid tools with '--tool-help', 2012-03-29), trim the list of merge backends in the documentation. We do not want to have a complete list of valid tools; we only want a list to help people guess what kind of things the tools do to be specified there, and refer them to --tool-help for a complete list. Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--Documentation/git-mergetool.txt6
-rw-r--r--git-mergetool--lib.sh6
-rwxr-xr-xgit-mergetool.sh42
3 files changed, 49 insertions, 5 deletions
diff --git a/Documentation/git-mergetool.txt b/Documentation/git-mergetool.txt
index 2a49de7cf..d7207bd9b 100644
--- a/Documentation/git-mergetool.txt
+++ b/Documentation/git-mergetool.txt
@@ -27,9 +27,9 @@ OPTIONS
-t <tool>::
--tool=<tool>::
Use the merge resolution program specified by <tool>.
- Valid merge tools are:
- araxis, bc3, diffuse, ecmerge, emerge, gvimdiff, kdiff3,
- meld, opendiff, p4merge, tkdiff, tortoisemerge, vimdiff and xxdiff.
+ Valid values include emerge, gvimdiff, kdiff3,
+ meld, vimdiff, and tortoisemerge. Run `git mergetool --tool-help`
+ for the list of valid <tool> settings.
+
If a merge resolution program is not specified, 'git mergetool'
will use the configuration variable `merge.tool`. If the
diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index ed630b208..f730253c0 100644
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -111,7 +111,7 @@ run_merge_tool () {
return $status
}
-guess_merge_tool () {
+list_merge_tool_candidates () {
if merge_mode
then
tools="tortoisemerge"
@@ -136,6 +136,10 @@ guess_merge_tool () {
tools="$tools emerge vimdiff"
;;
esac
+}
+
+guess_merge_tool () {
+ list_merge_tool_candidates
echo >&2 "merge tool candidates: $tools"
# Loop over each candidate and stop when a valid merge tool is found.
diff --git a/git-mergetool.sh b/git-mergetool.sh
index a9f23f7fc..0db0c4484 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -8,7 +8,7 @@
# at the discretion of Junio C Hamano.
#
-USAGE='[--tool=tool] [-y|--no-prompt|--prompt] [file to merge] ...'
+USAGE='[--tool=tool] [--tool-help] [-y|--no-prompt|--prompt] [file to merge] ...'
SUBDIRECTORY_OK=Yes
OPTIONS_SPEC=
TOOL_MODE=merge
@@ -284,11 +284,51 @@ merge_file () {
return 0
}
+show_tool_help () {
+ TOOL_MODE=merge
+ list_merge_tool_candidates
+ unavailable= available= LF='
+'
+ for i in $tools
+ do
+ merge_tool_path=$(translate_merge_tool_path "$i")
+ if type "$merge_tool_path" >/dev/null 2>&1
+ then
+ available="$available$i$LF"
+ else
+ unavailable="$unavailable$i$LF"
+ fi
+ done
+ if test -n "$available"
+ then
+ echo "'git mergetool --tool=<tool>' may be set to one of the following:"
+ echo "$available" | sort | sed -e 's/^/ /'
+ else
+ echo "No suitable tool for 'git mergetool --tool=<tool>' found."
+ fi
+ if test -n "$unavailable"
+ then
+ echo
+ echo 'The following tools are valid, but not currently available:'
+ echo "$unavailable" | sort | sed -e 's/^/ /'
+ fi
+ if test -n "$unavailable$available"
+ then
+ echo
+ echo "Some of the tools listed above only work in a windowed"
+ echo "environment. If run in a terminal-only session, they will fail."
+ fi
+ exit 0
+}
+
prompt=$(git config --bool mergetool.prompt || echo true)
while test $# != 0
do
case "$1" in
+ --tool-help)
+ show_tool_help
+ ;;
-t|--tool*)
case "$#,$1" in
*,*=*)