git/mergetools/bc
David Aguilar 7c10605d2c mergetool: honor mergetool.$tool.trustExitCode for built-in tools
Built-in merge tools contain a hard-coded assumption about
whether or not a tool's exit code can be trusted to determine
the success or failure of a merge.  Tools whose exit codes are
not trusted contain calls to check_unchanged() in their
merge_cmd() functions.

A problem with this is that the trustExitCode configuration is
not honored for built-in tools.

Teach built-in tools to honor the trustExitCode configuration.
Extend run_merge_cmd() so that it is responsible for calling
check_unchanged() when a tool's exit code cannot be trusted.
Remove check_unchanged() calls from scriptlets since they are no
longer responsible for calling it.

When no configuration is present, exit_code_trustable() is
checked to see whether the exit code should be trusted.
The default implementation returns false.

Tools whose exit codes can be trusted override
exit_code_trustable() to true.

Reported-by: Dun Peal <dunpealer@gmail.com>
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-29 10:54:03 -08:00

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diff_cmd () {
"$merge_tool_path" "$LOCAL" "$REMOTE"
}
merge_cmd () {
if $base_present
then
"$merge_tool_path" "$LOCAL" "$REMOTE" "$BASE" \
-mergeoutput="$MERGED"
else
"$merge_tool_path" "$LOCAL" "$REMOTE" \
-mergeoutput="$MERGED"
fi
}
translate_merge_tool_path() {
if type bcomp >/dev/null 2>/dev/null
then
echo bcomp
else
echo bcompare
fi
}