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filemerge: make last line of prompts <40 english chars (issue6158)...
filemerge: make last line of prompts <40 english chars (issue6158) I've chosen <40 as the target so that other languages that may have a 2x blowup in character count can still have a chance to fit into an 80 column screen. Previously, we would show a prompt like: ``` keep (l)ocal [dest], take (o)ther [source], or leave (u)nresolved for some/potentially/really/long/path? ``` On at least some systems, if readline was in use then the last line of the prompt would be wrapped strangely if it couldn't fit entirely on one line. This strange wrapping may be just a carriage return without a line feed, overwriting the beginning of the line; example (100 columns wide, 65 character filename, and yes there's 10 spaces on the end, I assume this is to handle the user inputting longest word we provide as an option, "unresolved"): ``` ng/dir/name/that/does/not/work/well/with/readline/file.txt? ave (u)nresolved for some/lon ``` In some cases it may partially wrap onto the next line, but still be missing earlier parts in the line, such as below (60 columns wide, 65 character filename): ``` rev], or leave (u)nresolved for some/long/dir/name/that/do s/not/work/well/with/readline/file.txt? ``` With this fix, this looks like this on a 60 column screen: ``` tool vim_with_markers (for pattern some/long/dir/name/that/d oes/not/work/well/with/readline/file.txt) can't handle binar y tool meld can't handle binary tool vim_with_markers can't handle binary tool internal:merge3 can't handle binary tool merge can't handle binary no tool found to merge some/long/dir/name/that/does/not/work /well/with/readline/file.txt file 'some/long/dir/name/that/does/not/work/well/with/readli ne/file.txt' needs to be resolved. You can keep (l)ocal [working copy], take (o)ther [merge rev ], or leave (u)nresolved. What do you want to do? ``` Differential Revision: https://phab.mercurial-scm.org/D6562
Kyle Lippincott - - Load All Authors

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test-merge-types.t
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#require symlink execbit
$ tellmeabout() {
> if [ -h $1 ]; then
> echo $1 is a symlink:
> $TESTDIR/readlink.py $1
> elif [ -x $1 ]; then
> echo $1 is an executable file with content:
> cat $1
> else
> echo $1 is a plain file with content:
> cat $1
> fi
> }
$ hg init test1
$ cd test1
$ echo a > a
$ hg ci -Aqmadd
$ chmod +x a
$ hg ci -mexecutable
$ hg up -q 0
$ rm a
$ ln -s symlink a
$ hg ci -msymlink
created new head
Symlink is local parent, executable is other:
$ hg merge --debug
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: c334dc3be0da, local: 521a1e40188f+, remote: 3574f3e69b1c
preserving a for resolve of a
a: versions differ -> m (premerge)
tool internal:merge (for pattern a) can't handle symlinks
couldn't find merge tool hgmerge
no tool found to merge a
picked tool ':prompt' for a (binary False symlink True changedelete False)
file 'a' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout a
a is a symlink:
a -> symlink
$ hg resolve a --tool internal:other
(no more unresolved files)
$ tellmeabout a
a is an executable file with content:
a
$ hg st
M a
? a.orig
Symlink is other parent, executable is local:
$ hg update -C 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge --debug --tool :union
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f
preserving a for resolve of a
a: versions differ -> m (premerge)
picked tool ':union' for a (binary False symlink True changedelete False)
merging a
my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da
warning: internal :union cannot merge symlinks for a
warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout a
a is an executable file with content:
a
$ hg update -C 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge --debug --tool :merge3
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f
preserving a for resolve of a
a: versions differ -> m (premerge)
picked tool ':merge3' for a (binary False symlink True changedelete False)
merging a
my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da
warning: internal :merge3 cannot merge symlinks for a
warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout a
a is an executable file with content:
a
$ hg update -C 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge --debug --tool :merge-local
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f
preserving a for resolve of a
a: versions differ -> m (premerge)
picked tool ':merge-local' for a (binary False symlink True changedelete False)
merging a
my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da
warning: internal :merge-local cannot merge symlinks for a
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout a
a is an executable file with content:
a
$ hg update -C 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge --debug --tool :merge-other
resolving manifests
branchmerge: True, force: False, partial: False
ancestor: c334dc3be0da, local: 3574f3e69b1c+, remote: 521a1e40188f
preserving a for resolve of a
a: versions differ -> m (premerge)
picked tool ':merge-other' for a (binary False symlink True changedelete False)
merging a
my a@3574f3e69b1c+ other a@521a1e40188f ancestor a@c334dc3be0da
warning: internal :merge-other cannot merge symlinks for a
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout a
a is an executable file with content:
a
Update to link without local change should get us a symlink (issue3316):
$ hg up -C 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg up
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to "521a1e40188f: symlink"
1 other heads for branch "default"
$ hg st
? a.orig
Update to link with local change should cause a merge prompt (issue3200):
$ hg up -Cq 0
$ echo data > a
$ HGMERGE= hg up -y --debug --config ui.merge=
resolving manifests
branchmerge: False, force: False, partial: False
ancestor: c334dc3be0da, local: c334dc3be0da+, remote: 521a1e40188f
preserving a for resolve of a
a: versions differ -> m (premerge)
(couldn't find merge tool hgmerge|tool hgmerge can't handle symlinks) (re)
no tool found to merge a
picked tool ':prompt' for a (binary False symlink True changedelete False)
file 'a' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [destination], or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges
updated to "521a1e40188f: symlink"
1 other heads for branch "default"
[1]
$ hg diff --git
diff --git a/a b/a
old mode 120000
new mode 100644
--- a/a
+++ b/a
@@ -1,1 +1,1 @@
-symlink
\ No newline at end of file
+data
Test only 'l' change - happens rarely, except when recovering from situations
where that was what happened.
$ hg init test2
$ cd test2
$ printf base > f
$ hg ci -Aqm0
$ echo file > f
$ echo content >> f
$ hg ci -qm1
$ hg up -qr0
$ rm f
$ ln -s base f
$ hg ci -qm2
$ hg merge
tool internal:merge (for pattern f) can't handle symlinks
no tool found to merge f
file 'f' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout f
f is a symlink:
f -> base
$ hg up -Cqr1
$ hg merge
tool internal:merge (for pattern f) can't handle symlinks
no tool found to merge f
file 'f' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout f
f is a plain file with content:
file
content
$ cd ..
Test removed 'x' flag merged with change to symlink
$ hg init test3
$ cd test3
$ echo f > f
$ chmod +x f
$ hg ci -Aqm0
$ chmod -x f
$ hg ci -qm1
$ hg up -qr0
$ rm f
$ ln -s dangling f
$ hg ci -qm2
$ hg merge
tool internal:merge (for pattern f) can't handle symlinks
no tool found to merge f
file 'f' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout f
f is a symlink:
f -> dangling
$ hg up -Cqr1
$ hg merge
tool internal:merge (for pattern f) can't handle symlinks
no tool found to merge f
file 'f' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout f
f is a plain file with content:
f
Test removed 'x' flag merged with content change - both ways
$ hg up -Cqr0
$ echo change > f
$ hg ci -qm3
$ hg merge -r1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ tellmeabout f
f is a plain file with content:
change
$ hg up -qCr1
$ hg merge -r3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ tellmeabout f
f is a plain file with content:
change
$ cd ..
Test merge with no common ancestor:
a: just different
b: x vs -, different (cannot calculate x, cannot ask merge tool)
c: x vs -, same (cannot calculate x, merge tool is no good)
d: x vs l, different
e: x vs l, same
f: - vs l, different
g: - vs l, same
h: l vs l, different
(where same means the filelog entry is shared and there thus is an ancestor!)
$ hg init test4
$ cd test4
$ echo 0 > 0
$ hg ci -Aqm0
$ echo 1 > a
$ echo 1 > b
$ chmod +x b
$ echo 1 > bx
$ chmod +x bx
$ echo x > c
$ chmod +x c
$ echo 1 > d
$ chmod +x d
$ printf x > e
$ chmod +x e
$ echo 1 > f
$ printf x > g
$ ln -s 1 h
$ hg ci -qAm1
$ hg up -qr0
$ echo 2 > a
$ echo 2 > b
$ echo 2 > bx
$ chmod +x bx
$ echo x > c
$ ln -s 2 d
$ ln -s x e
$ ln -s 2 f
$ ln -s x g
$ ln -s 2 h
$ hg ci -Aqm2
$ hg merge
merging a
warning: cannot merge flags for b without common ancestor - keeping local flags
merging b
merging bx
warning: cannot merge flags for c without common ancestor - keeping local flags
tool internal:merge (for pattern d) can't handle symlinks
no tool found to merge d
file 'd' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
tool internal:merge (for pattern f) can't handle symlinks
no tool found to merge f
file 'f' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
tool internal:merge (for pattern h) can't handle symlinks
no tool found to merge h
file 'h' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
warning: conflicts while merging bx! (edit, then use 'hg resolve --mark')
3 files updated, 0 files merged, 0 files removed, 6 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ hg resolve -l
U a
U b
U bx
U d
U f
U h
$ tellmeabout a
a is a plain file with content:
<<<<<<< working copy: 0c617753b41b - test: 2
2
=======
1
>>>>>>> merge rev: 2e60aa20b912 - test: 1
$ tellmeabout b
b is a plain file with content:
<<<<<<< working copy: 0c617753b41b - test: 2
2
=======
1
>>>>>>> merge rev: 2e60aa20b912 - test: 1
$ tellmeabout c
c is a plain file with content:
x
$ tellmeabout d
d is a symlink:
d -> 2
$ tellmeabout e
e is a symlink:
e -> x
$ tellmeabout f
f is a symlink:
f -> 2
$ tellmeabout g
g is a symlink:
g -> x
$ tellmeabout h
h is a symlink:
h -> 2
$ hg up -Cqr1
$ hg merge
merging a
warning: cannot merge flags for b without common ancestor - keeping local flags
merging b
merging bx
warning: cannot merge flags for c without common ancestor - keeping local flags
tool internal:merge (for pattern d) can't handle symlinks
no tool found to merge d
file 'd' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
tool internal:merge (for pattern f) can't handle symlinks
no tool found to merge f
file 'f' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
tool internal:merge (for pattern h) can't handle symlinks
no tool found to merge h
file 'h' needs to be resolved.
You can keep (l)ocal [working copy], take (o)ther [merge rev], or leave (u)nresolved.
What do you want to do? u
warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
warning: conflicts while merging bx! (edit, then use 'hg resolve --mark')
3 files updated, 0 files merged, 0 files removed, 6 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
$ tellmeabout a
a is a plain file with content:
<<<<<<< working copy: 2e60aa20b912 - test: 1
1
=======
2
>>>>>>> merge rev: 0c617753b41b - test: 2
$ tellmeabout b
b is an executable file with content:
<<<<<<< working copy: 2e60aa20b912 - test: 1
1
=======
2
>>>>>>> merge rev: 0c617753b41b - test: 2
$ tellmeabout c
c is an executable file with content:
x
$ tellmeabout d
d is an executable file with content:
1
$ tellmeabout e
e is an executable file with content:
x (no-eol)
$ tellmeabout f
f is a plain file with content:
1
$ tellmeabout g
g is a plain file with content:
x (no-eol)
$ tellmeabout h
h is a symlink:
h -> 1
$ cd ..