[PATCH v2 2/5] Use variables for the lists of tools that support merging / diffing

[Sebastian Schuberth <sschuberth@gmail.com>]

Also, add a few comments that clarify the meaning of these variables.

Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>
---
 contrib/completion/git-completion.bash | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index f2c4894..6b9b79d 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -1325,17 +1325,24 @@ _git_diff ()
 	__git_complete_revlist_file
 }
 
+# Tools that support both merging and diffing.
 __git_mergetools_common="araxis bc3 diffuse ecmerge emerge gvimdiff
 			kdiff3 meld opendiff p4merge tkdiff vimdiff xxdiff
 "
 
+# Tools that support diffing.
+__git_difftools="$__git_mergetools_common kcompare"
+
+# Tools that support merging.
+__git_mergetools="$__git_mergetools_common tortoisemerge"
+
 _git_difftool ()
 {
 	__git_has_doubledash && return
 
 	case "$cur" in
 	--tool=*)
-		__gitcomp "$__git_mergetools_common kompare" "" "${cur##--tool=}"
+		__gitcomp "$__git_difftools" "" "${cur##--tool=}"
 		return
 		;;
 	--*)
@@ -1623,7 +1630,7 @@ _git_mergetool ()
 {
 	case "$cur" in
 	--tool=*)
-		__gitcomp "$__git_mergetools_common tortoisemerge" "" "${cur##--tool=}"
+		__gitcomp "$__git_mergetools" "" "${cur##--tool=}"
 		return
 		;;
 	--*)
-- 
1.7.11.msysgit.2