merge: use operation-provided labels (ex: dest/source) in several merge-tools

Tools that did not use labels already, used only one, or used some label other
than the exact strings of "local" or "other" were unmodified.  Cases that used
the label "base" were modified as well, if they were otherwise changed in this
CL; "merged" was *not* changed.

There are other possible changes we might want to make, but I didn't:
- bcompare (linux and osx) uses the labels "parent1" and "parent2" instead of
  "local" and "other", so it was left alone, even though beyondcompare3
  (windows) *was* changed.
- araxis used the labels "Other", "Base", and "Local :$local", so it was also
  left alone.
- UltraCompare didn't provide a label for 'local', just for 'base' and 'other',
  so it was left alone.

Differential Revision: https://phab.mercurial-scm.org/D2012

mercurial/default.d/mergetools.rc

@@ -1,146 +1,146
 # Some default global settings for common merge tools
 
 [merge-tools]
-kdiff3.args=--auto --L1 base --L2 local --L3 other $base $local $other -o $output
+kdiff3.args=--auto --L1 $labelbase --L2 $labellocal --L3 $labelother $base $local $other -o $output
 kdiff3.regkey=Software\KDiff3
 kdiff3.regkeyalt=Software\Wow6432Node\KDiff3
 kdiff3.regappend=\kdiff3.exe
 kdiff3.fixeol=True
 kdiff3.gui=True
 kdiff3.diffargs=--L1 $plabel1 --L2 $clabel $parent $child
 
 gvimdiff.args=--nofork -d -g -O $local $other $base
 gvimdiff.regkey=Software\Vim\GVim
 gvimdiff.regkeyalt=Software\Wow6432Node\Vim\GVim
 gvimdiff.regname=path
 gvimdiff.priority=-9
 gvimdiff.diffargs=--nofork -d -g -O $parent $child
 
 vimdiff.args=$local $other $base -c 'redraw | echomsg "hg merge conflict, type \":cq\" to abort vimdiff"'
 vimdiff.check=changed
 vimdiff.priority=-10
 
 merge.check=conflicts
 merge.priority=-100
 
 gpyfm.gui=True
 
 meld.gui=True
-meld.args=--label='local' $local --label='merged' $base --label='other' $other -o $output
+meld.args=--label=$labellocal $local --label='merged' $base --label=$labelother $other -o $output
 meld.check=changed
 meld.diffargs=-a --label=$plabel1 $parent --label=$clabel $child
 
 tkdiff.args=$local $other -a $base -o $output
 tkdiff.gui=True
 tkdiff.priority=-8
 tkdiff.diffargs=-L $plabel1 $parent -L $clabel $child
 
-xxdiff.args=--show-merged-pane --exit-with-merge-status --title1 local --title2 base --title3 other --merged-filename $output --merge $local $base $other
+xxdiff.args=--show-merged-pane --exit-with-merge-status --title1 $labellocal --title2 $labelbase --title3 $labelother --merged-filename $output --merge $local $base $other
 xxdiff.gui=True
 xxdiff.priority=-8
 xxdiff.diffargs=--title1 $plabel1 $parent --title2 $clabel $child
 
 diffmerge.regkey=Software\SourceGear\SourceGear DiffMerge\
 diffmerge.regkeyalt=Software\Wow6432Node\SourceGear\SourceGear DiffMerge\
 diffmerge.regname=Location
 diffmerge.priority=-7
-diffmerge.args=-nosplash -merge -title1=local -title2=merged -title3=other $local $base $other -result=$output
+diffmerge.args=-nosplash -merge -title1=$labellocal -title2=merged -title3=$labelother $local $base $other -result=$output
 diffmerge.check=changed
 diffmerge.gui=True
 diffmerge.diffargs=--nosplash --title1=$plabel1 --title2=$clabel $parent $child
 
 p4merge.args=$base $local $other $output
 p4merge.regkey=Software\Perforce\Environment
 p4merge.regkeyalt=Software\Wow6432Node\Perforce\Environment
 p4merge.regname=P4INSTROOT
 p4merge.regappend=\p4merge.exe
 p4merge.gui=True
 p4merge.priority=-8
 p4merge.diffargs=$parent $child
 
 p4mergeosx.executable = /Applications/p4merge.app/Contents/MacOS/p4merge
 p4mergeosx.args = $base $local $other $output
 p4mergeosx.gui = True
 p4mergeosx.priority=-8
 p4mergeosx.diffargs=$parent $child
 
 tortoisemerge.args=/base:$base /mine:$local /theirs:$other /merged:$output
 tortoisemerge.regkey=Software\TortoiseSVN
 tortoisemerge.regkeyalt=Software\Wow6432Node\TortoiseSVN
 tortoisemerge.check=changed
 tortoisemerge.gui=True
 tortoisemerge.priority=-8
 tortoisemerge.diffargs=/base:$parent /mine:$child /basename:$plabel1 /minename:$clabel
 
-ecmerge.args=$base $local $other --mode=merge3 --title0=base --title1=local --title2=other --to=$output
+ecmerge.args=$base $local $other --mode=merge3 --title0=$labelbase --title1=$labellocal --title2=$labelother --to=$output
 ecmerge.regkey=Software\Elli\xc3\xa9 Computing\Merge
 ecmerge.regkeyalt=Software\Wow6432Node\Elli\xc3\xa9 Computing\Merge
 ecmerge.gui=True
 ecmerge.diffargs=$parent $child --mode=diff2 --title1=$plabel1 --title2=$clabel
 
 # editmerge is a small script shipped in contrib.
 # It needs this config otherwise it behaves the same as internal:local
 editmerge.args=$output
 editmerge.check=changed
 editmerge.premerge=keep
 
 filemerge.executable=/Developer/Applications/Utilities/FileMerge.app/Contents/MacOS/FileMerge
 filemerge.args=-left $other -right $local -ancestor $base -merge $output
 filemerge.gui=True
 
 filemergexcode.executable=/Applications/Xcode.app/Contents/Applications/FileMerge.app/Contents/MacOS/FileMerge
 filemergexcode.args=-left $other -right $local -ancestor $base -merge $output
 filemergexcode.gui=True
 
 ; Windows version of Beyond Compare
-beyondcompare3.args=$local $other $base $output /ro /lefttitle=local /centertitle=base /righttitle=other /automerge /reviewconflicts /solo
+beyondcompare3.args=$local $other $base $output /ro /lefttitle=$labellocal /centertitle=$labelbase /righttitle=$labelother /automerge /reviewconflicts /solo
 beyondcompare3.regkey=Software\Scooter Software\Beyond Compare 3
 beyondcompare3.regname=ExePath
 beyondcompare3.gui=True
 beyondcompare3.priority=-2
 beyondcompare3.diffargs=/lro /lefttitle=$plabel1 /righttitle=$clabel /solo /expandall $parent $child
 
 ; Linux version of Beyond Compare
 bcompare.args=$local $other $base -mergeoutput=$output -ro -lefttitle=parent1 -centertitle=base -righttitle=parent2 -outputtitle=merged -automerge -reviewconflicts -solo
 bcompare.gui=True
 bcompare.priority=-1
 bcompare.diffargs=-lro -lefttitle=$plabel1 -righttitle=$clabel -solo -expandall $parent $child
 
 ; OS X version of Beyond Compare
 bcomposx.executable = /Applications/Beyond Compare.app/Contents/MacOS/bcomp
 bcomposx.args=$local $other $base -mergeoutput=$output -ro -lefttitle=parent1 -centertitle=base -righttitle=parent2 -outputtitle=merged -automerge -reviewconflicts -solo
 bcomposx.gui=True
 bcomposx.priority=-1
 bcomposx.diffargs=-lro -lefttitle=$plabel1 -righttitle=$clabel -solo -expandall $parent $child
 
-winmerge.args=/e /x /wl /ub /dl other /dr local $other $local $output
+winmerge.args=/e /x /wl /ub /dl $labelother /dr $labellocal $other $local $output
 winmerge.regkey=Software\Thingamahoochie\WinMerge
 winmerge.regkeyalt=Software\Wow6432Node\Thingamahoochie\WinMerge\
 winmerge.regname=Executable
 winmerge.check=changed
 winmerge.gui=True
 winmerge.priority=-10
 winmerge.diffargs=/r /e /x /ub /wl /dl $plabel1 /dr $clabel $parent $child
 
 araxis.regkey=SOFTWARE\Classes\TypeLib\{46799e0a-7bd1-4330-911c-9660bb964ea2}\7.0\HELPDIR
 araxis.regappend=\ConsoleCompare.exe
 araxis.priority=-2
 araxis.args=/3 /a2 /wait /merge /title1:"Other" /title2:"Base" /title3:"Local :"$local $other $base $local $output
 araxis.checkconflict=True
 araxis.binary=True
 araxis.gui=True
 araxis.diffargs=/2 /wait /title1:$plabel1 /title2:$clabel $parent $child
 
 diffuse.priority=-3
 diffuse.args=$local $base $other
 diffuse.gui=True
 diffuse.diffargs=$parent $child
 
 UltraCompare.regkey=Software\Microsoft\Windows\CurrentVersion\App Paths\UC.exe
 UltraCompare.regkeyalt=Software\Wow6432Node\Microsoft\Windows\CurrentVersion\App Paths\UC.exe
 UltraCompare.args = $base $local $other -title1 base -title3 other
 UltraCompare.priority = -2
 UltraCompare.gui = True
 UltraCompare.binary = True
 UltraCompare.check = conflicts,changed
 UltraCompare.diffargs=$child $parent -title1 $clabel -title2 $plabel1