util: flush stdout before calling external processes
stdout could have content in its buffer while a subprocess ran and emitted
output.
Flushing stdout ensures that output now comes in the right order.
test merge-tools configuration - mostly exercising filemerge.py
$ unset HGMERGE # make sure HGMERGE doesn't interfere with the test
$ hg init
revision 0
$ echo "revision 0" > f
$ echo "space" >> f
$ hg commit -Am "revision 0"
adding f
revision 1
$ echo "revision 1" > f
$ echo "space" >> f
$ hg commit -Am "revision 1"
$ hg update 0 > /dev/null
revision 2
$ echo "revision 2" > f
$ echo "space" >> f
$ hg commit -Am "revision 2"
created new head
$ hg update 0 > /dev/null
revision 3 - simple to merge
$ echo "revision 3" >> f
$ hg commit -Am "revision 3"
created new head
$ echo "[merge-tools]" > .hg/hgrc
$ echo
$ beforemerge() {
> cat .hg/hgrc
> echo "# hg update -C 1"
> hg update -C 1 > /dev/null
> }
$ aftermerge() {
> echo "# cat f"
> cat f
> echo "# hg stat"
> hg stat
> rm -f f.orig
> echo
> }
$ domerge() {
> beforemerge
> echo "# hg merge $*"
> hg merge $*
> aftermerge
> }
$ echo
Tool selection
$ echo
default is internal merge:
$ beforemerge
[merge-tools]
# hg update -C 1
hg merge -r 2
override $PATH to ensure hgmerge not visible; use $PYTHON in case we're
running from a devel copy, not a temp installation
$ PATH="$BINDIR" $PYTHON "$BINDIR"/hg merge -r 2
merging f
warning: conflicts during merge.
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
[1]
$ aftermerge
# cat f
<<<<<<< local
revision 1
=======
revision 2
>>>>>>> other
space
# hg stat
M f
? f.orig
simplest hgrc using false for merge:
$ echo "false.whatever=" >> .hg/hgrc
$ domerge -r 2
[merge-tools]
false.whatever=
# hg update -C 1
# hg merge -r 2
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
true with higher .priority gets precedence:
$ echo "true.priority=1" >> .hg/hgrc
$ domerge -r 2
[merge-tools]
false.whatever=
true.priority=1
# hg update -C 1
# hg merge -r 2
merging f
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
# cat f
revision 1
space
# hg stat
M f
unless lowered on command line:
$ domerge -r 2 --config merge-tools.true.priority=-7
[merge-tools]
false.whatever=
true.priority=1
# hg update -C 1
# hg merge -r 2 --config merge-tools.true.priority=-7
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
or false set higher on command line:
$ domerge -r 2 --config merge-tools.false.priority=117
[merge-tools]
false.whatever=
true.priority=1
# hg update -C 1
# hg merge -r 2 --config merge-tools.false.priority=117
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
or true.executable not found in PATH:
$ domerge -r 2 --config merge-tools.true.executable=nonexistingmergetool
[merge-tools]
false.whatever=
true.priority=1
# hg update -C 1
# hg merge -r 2 --config merge-tools.true.executable=nonexistingmergetool
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
or true.executable with bogus path:
$ domerge -r 2 --config merge-tools.true.executable=/nonexisting/mergetool
[merge-tools]
false.whatever=
true.priority=1
# hg update -C 1
# hg merge -r 2 --config merge-tools.true.executable=/nonexisting/mergetool
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
but true.executable set to cat found in PATH works:
$ echo "true.executable=cat" >> .hg/hgrc
$ domerge -r 2
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2
merging f
revision 1
space
revision 0
space
revision 2
space
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
# cat f
revision 1
space
# hg stat
M f
and true.executable set to cat with path works:
$ domerge -r 2 --config merge-tools.true.executable=cat
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config merge-tools.true.executable=cat
merging f
revision 1
space
revision 0
space
revision 2
space
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
# cat f
revision 1
space
# hg stat
M f
$ echo
Tool selection and merge-patterns
$ echo
merge-patterns specifies new tool false:
$ domerge -r 2 --config merge-patterns.f=false
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config merge-patterns.f=false
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
merge-patterns specifies executable not found in PATH and gets warning:
$ domerge -r 2 --config merge-patterns.f=true --config merge-tools.true.executable=nonexistingmergetool
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config merge-patterns.f=true --config merge-tools.true.executable=nonexistingmergetool
couldn't find merge tool true specified for f
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
merge-patterns specifies executable with bogus path and gets warning:
$ domerge -r 2 --config merge-patterns.f=true --config merge-tools.true.executable=/nonexisting/mergetool
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config merge-patterns.f=true --config merge-tools.true.executable=/nonexisting/mergetool
couldn't find merge tool true specified for f
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
$ echo
ui.merge overrules priority
$ echo
ui.merge specifies false:
$ domerge -r 2 --config ui.merge=false
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config ui.merge=false
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
ui.merge specifies internal:fail:
$ domerge -r 2 --config ui.merge=internal:fail
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config ui.merge=internal:fail
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
ui.merge specifies internal:local:
$ domerge -r 2 --config ui.merge=internal:local
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config ui.merge=internal:local
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
# cat f
revision 1
space
# hg stat
M f
ui.merge specifies internal:other:
$ domerge -r 2 --config ui.merge=internal:other
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config ui.merge=internal:other
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
# cat f
revision 2
space
# hg stat
M f
ui.merge specifies internal:prompt:
$ domerge -r 2 --config ui.merge=internal:prompt
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config ui.merge=internal:prompt
no tool found to merge f
keep (l)ocal or take (o)ther? l
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
# cat f
revision 1
space
# hg stat
M f
ui.merge specifies internal:dump:
$ domerge -r 2 --config ui.merge=internal:dump
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config ui.merge=internal:dump
merging f
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.base
? f.local
? f.orig
? f.other
f.base:
$ cat f.base
revision 0
space
f.local:
$ cat f.local
revision 1
space
f.other:
$ cat f.other
revision 2
space
$ rm f.base f.local f.other
$ echo
ui.merge specifies internal:other but is overruled by pattern for false:
$ domerge -r 2 --config ui.merge=internal:other --config merge-patterns.f=false
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config ui.merge=internal:other --config merge-patterns.f=false
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
$ echo
Premerge
$ echo
ui.merge specifies internal:other but is overruled by --tool=false
$ domerge -r 2 --config ui.merge=internal:other --tool=false
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --config ui.merge=internal:other --tool=false
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
HGMERGE specifies internal:other but is overruled by --tool=false
$ HGMERGE=internal:other ; export HGMERGE
$ domerge -r 2 --tool=false
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 2 --tool=false
merging f
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig
$ unset HGMERGE # make sure HGMERGE doesn't interfere with remaining tests
Default is silent simplemerge:
$ domerge -r 3
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 3
merging f
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
# cat f
revision 1
space
revision 3
# hg stat
M f
.premerge=True is same:
$ domerge -r 3 --config merge-tools.true.premerge=True
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 3 --config merge-tools.true.premerge=True
merging f
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
# cat f
revision 1
space
revision 3
# hg stat
M f
.premerge=False executes merge-tool:
$ domerge -r 3 --config merge-tools.true.premerge=False
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -r 3 --config merge-tools.true.premerge=False
merging f
revision 1
space
revision 0
space
revision 0
space
revision 3
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
# cat f
revision 1
space
# hg stat
M f
$ echo
Tool execution
$ echo
$ echo '# set tools.args explicit to include $base $local $other $output:' # default '$local $base $other'
# set tools.args explicit to include $base $local $other $output:
$ beforemerge
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
$ hg merge -r 2 --config merge-tools.true.executable=head --config merge-tools.true.args='$base $local $other $output' \
> | sed 's,==> .* <==,==> ... <==,g'
merging f
==> ... <==
revision 0
space
==> ... <==
revision 1
space
==> ... <==
revision 2
space
==> ... <==
revision 1
space
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ aftermerge
# cat f
revision 1
space
# hg stat
M f
$ echo '# Merge with "echo mergeresult > $local":'
# Merge with "echo mergeresult > $local":
$ beforemerge
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
$ hg merge -r 2 --config merge-tools.true.executable=echo --config merge-tools.true.args='mergeresult > $local'
merging f
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ aftermerge
# cat f
mergeresult
# hg stat
M f
$ echo '# - and $local is the file f:'
# - and $local is the file f:
$ beforemerge
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
$ hg merge -r 2 --config merge-tools.true.executable=echo --config merge-tools.true.args='mergeresult > f'
merging f
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ aftermerge
# cat f
mergeresult
# hg stat
M f
$ echo '# Merge with "echo mergeresult > $output" - the variable is a bit magic:'
# Merge with "echo mergeresult > $output" - the variable is a bit magic:
$ beforemerge
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
$ hg merge -r 2 --config merge-tools.true.executable=echo --config merge-tools.true.args='mergeresult > $output'
merging f
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ aftermerge
# cat f
mergeresult
# hg stat
M f
Merge using tool with a path that must be quoted:
$ beforemerge
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
$ cat <<EOF > 'my merge tool'
> #!/bin/sh
> cat "\$1" "\$2" "\$3" > "\$4"
> EOF
$ chmod +x 'my merge tool'
$ hg merge -r 2 --config merge-tools.true.executable='./my merge tool' --config merge-tools.true.args='$base $local $other $output'
merging f
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ rm -f 'my merge tool'
$ aftermerge
# cat f
revision 0
space
revision 1
space
revision 2
space
# hg stat
M f
$ echo
Merge post-processing
$ echo
cat is a bad merge-tool and doesn't change:
$ domerge -y -r 2 --config merge-tools.true.checkchanged=1
[merge-tools]
false.whatever=
true.priority=1
true.executable=cat
# hg update -C 1
# hg merge -y -r 2 --config merge-tools.true.checkchanged=1
merging f
revision 1
space
revision 0
space
revision 2
space
output file f appears unchanged
was merge successful (yn)? n
merging f failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
# cat f
revision 1
space
# hg stat
M f
? f.orig