mergetool--lib: simplify API usage by removing more global variables

The mergetool--lib scriplet was tricky to use because it relied upon
the existance of several global shell variables.  This removes more
global variables so that things are simpler for callers.

A side effect is that some variables are recomputed each time
run_merge_tool() is called, but the overhead for recomputing
them is justified by the simpler implementation.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
David Aguilar
2009-04-11 20:41:56 -07:00
committed by Junio C Hamano
parent 70af4e9bef
commit 47d65924a6
4 changed files with 77 additions and 71 deletions

View File

@ -7,7 +7,7 @@ git-mergetool--lib - Common git merge tool shell scriptlets
SYNOPSIS
--------
'. "$(git --exec-path)/git-mergetool--lib"'
'TOOL_MODE=(diff|merge) . "$(git --exec-path)/git-mergetool--lib"'
DESCRIPTION
-----------
@ -20,14 +20,14 @@ The 'git-mergetool--lib' scriptlet is designed to be sourced (using
`.`) by other shell scripts to set up functions for working
with git merge tools.
Before sourcing it, your script should set up a few variables;
`TOOL_MODE` is used to define the operation mode for various
functions. 'diff' and 'merge' are valid values.
Before sourcing 'git-mergetool--lib', your script must set `TOOL_MODE`
to define the operation mode for the functions listed below.
'diff' and 'merge' are valid values.
FUNCTIONS
---------
get_merge_tool::
returns a merge tool
returns a merge tool.
get_merge_tool_cmd::
returns the custom command for a merge tool.
@ -38,10 +38,8 @@ get_merge_tool_path::
run_merge_tool::
launches a merge tool given the tool name and a true/false
flag to indicate whether a merge base is present.
'$merge_tool', '$merge_tool_path', and for custom commands,
'$merge_tool_cmd', must be defined prior to calling
run_merge_tool. Additionally, '$MERGED', '$LOCAL', '$REMOTE',
and '$BASE' must be defined for use by the merge tool.
'$MERGED', '$LOCAL', '$REMOTE', and '$BASE' must be defined
for use by the merge tool.
Author
------