mergetools.hgrc: add minimal configuration for editmerge

The ``editmerge`` script is shipped in contrib and opens an editor on
every conflicting file. It needs minimal configuration to inject the
config marker in the file before opening. Otherwise it behaves the
same as ``internal:local`` and bad things happen.

contrib/mergetools.hgrc

@@ -1,122 +1,128 b''
 # Some default global settings for common merge tools
 
 [merge-tools]
 kdiff3.args=--auto --L1 base --L2 local --L3 other $base $local $other -o $output
 kdiff3.regkey=Software\KDiff3
 kdiff3.regkeyalt=Software\Wow6432Node\KDiff3
 kdiff3.regappend=\kdiff3.exe
 kdiff3.fixeol=True
 kdiff3.gui=True
 kdiff3.diffargs=--L1 '$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
 
 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 $output
 meld.check=changed
 meld.diffargs=-a --label='$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 $other
 xxdiff.gui=True
 xxdiff.priority=-8
 xxdiff.diffargs=--title1 '$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.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
 
 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.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
 
 ; Windows version of Beyond Compare
 beyondcompare3.args=$local $other $base $output /ro /lefttitle=local /centertitle=base /righttitle=other /automerge /reviewconflicts /solo
 beyondcompare3.regkey=Software\Scooter Software\Beyond Compare 3
 beyondcompare3.regname=ExePath
 beyondcompare3.gui=True
 beyondcompare3.priority=-2
 beyondcompare3.diffargs=/lro /lefttitle='$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
 
 winmerge.args=/e /x /wl /ub /dl other /dr local $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