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git/mergetools/deltawalker
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" >/dev/null 2>&1
}
merge_cmd () {
# Adding $(pwd)/ in front of $MERGED should not be necessary.
# However without it, DeltaWalker (at least v1.9.8 on Windows)
# crashes with a JRE exception. The DeltaWalker user manual,
# shows $(pwd)/ whenever the '-merged' options is given.
# Adding it here seems to work around the problem.
if $base_present
then
"$merge_tool_path" "$LOCAL" "$REMOTE" "$BASE" -merged="$(pwd)/$MERGED"
else
"$merge_tool_path" "$LOCAL" "$REMOTE" -merged="$(pwd)/$MERGED"
fi >/dev/null 2>&1
}
translate_merge_tool_path () {
echo DeltaWalker
}
exit_code_trustable () {
true
}