Re: [PATCH] git mergetool: Don't repeat merge tool candidates

2 messages, 2 authors, 2016-06-15 · open the first message on its own page

Re: [PATCH] git mergetool: Don't repeat merge tool candidates

From: Junio C Hamano <hidden>
Date: 2016-06-15 22:46:00

Johannes Gilger [off-list ref] writes:
quoted hunk
git mergetool listed some candidates for mergetools twice, depending on
the environment.

Signed-off-by: Johannes Gilger <redacted>
---
 git-mergetool.sh |   13 +++++--------
 1 files changed, 5 insertions(+), 8 deletions(-)
diff --git a/git-mergetool.sh b/git-mergetool.sh
index 00e1337..8f09e4a 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -390,21 +390,18 @@ fi
 
 if test -z "$merge_tool" ; then
     if test -n "$DISPLAY"; then
-        merge_tool_candidates="kdiff3 tkdiff xxdiff meld gvimdiff"
         if test -n "$GNOME_DESKTOP_SESSION_ID" ; then
-            merge_tool_candidates="meld $merge_tool_candidates"
-        fi
-        if test "$KDE_FULL_SESSION" = "true"; then
-            merge_tool_candidates="kdiff3 $merge_tool_candidates"
+            merge_tool_candidates="meld kdiff3 tkdiff xxdiff gvimdiff"
+        else
+            merge_tool_candidates="kdiff3 tkdiff xxdiff meld gvimdiff"
         fi
     fi
     if echo "${VISUAL:-$EDITOR}" | grep 'emacs' > /dev/null 2>&1; then
-        merge_tool_candidates="$merge_tool_candidates emerge"
+        merge_tool_candidates="$merge_tool_candidates emerge opendiff vimdiff"
     fi
     if echo "${VISUAL:-$EDITOR}" | grep 'vim' > /dev/null 2>&1; then
-        merge_tool_candidates="$merge_tool_candidates vimdiff"
+        merge_tool_candidates="$merge_tool_candidates vimdiff opendiff emerge"
     fi
-    merge_tool_candidates="$merge_tool_candidates opendiff emerge vimdiff"
     echo "merge tool candidates: $merge_tool_candidates"
     for i in $merge_tool_candidates; do
         init_merge_tool_path $i
Doesn't this change the order of the tools listed in the variable,
affecting which one ends up being used?  I think that is a worse
regression than repeating the same name twice in an otherwise no-op
informational message.

Please spend a few minutes to see if there are active developers who are
familiar with the area of code you are touching and Cc them to ask their
input.

    git blame -L390,+20 git-mergetool.sh

tells me that most of this came from 301ac38 (git-mergetool: Make default
selection of merge-tool more intelligent, 2007-06-10), so I am Cc'ing Ted.

[PATCHv2] git mergetool: Don't repeat merge tool candidates

From: Johannes Gilger <hidden>
Date: 2016-06-15 22:46:00

git mergetool listed some candidates for mergetools twice, depending on
the environment.

Signed-off-by: Johannes Gilger <redacted>
---
The first patch had the fatal flaw that it listed nothing when DISPLAY 
and EDITOR/VISUAL were unset, we fixed that.
The order in which merge-candidates appear is still exactly the same, 
only duplicates have been stripped. The check for KDE_FULL_SESSION was 
removed since kdiff3 was added as long as DISPLAY was set and we weren't 
running gnome.

 git-mergetool.sh |   16 ++++++++--------
 1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/git-mergetool.sh b/git-mergetool.sh
index 00e1337..acdcffb 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -390,21 +390,21 @@ fi
 
 if test -z "$merge_tool" ; then
     if test -n "$DISPLAY"; then
-        merge_tool_candidates="kdiff3 tkdiff xxdiff meld gvimdiff"
         if test -n "$GNOME_DESKTOP_SESSION_ID" ; then
-            merge_tool_candidates="meld $merge_tool_candidates"
-        fi
-        if test "$KDE_FULL_SESSION" = "true"; then
-            merge_tool_candidates="kdiff3 $merge_tool_candidates"
+            merge_tool_candidates="meld kdiff3 tkdiff xxdiff gvimdiff"
+        else
+            merge_tool_candidates="kdiff3 tkdiff xxdiff meld gvimdiff"
         fi
     fi
     if echo "${VISUAL:-$EDITOR}" | grep 'emacs' > /dev/null 2>&1; then
-        merge_tool_candidates="$merge_tool_candidates emerge"
+        merge_tool_candidates="$merge_tool_candidates emerge opendiff vimdiff"
     fi
     if echo "${VISUAL:-$EDITOR}" | grep 'vim' > /dev/null 2>&1; then
-        merge_tool_candidates="$merge_tool_candidates vimdiff"
+        merge_tool_candidates="$merge_tool_candidates vimdiff opendiff emerge"
+    fi
+    if test -z "$merge_tool_candidates" ; then
+        merge_tool_candidates="opendiff emerge vimdiff"
     fi
-    merge_tool_candidates="$merge_tool_candidates opendiff emerge vimdiff"
     echo "merge tool candidates: $merge_tool_candidates"
     for i in $merge_tool_candidates; do
         init_merge_tool_path $i
-- 
1.6.1.40.g8ea6a
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