match: introduce boolean prefix() method
tl;dr: This is another step towards a (previously unstated) goal of
eliminating match.files() in conditions.
There are four types of matchers:
* always: Matches everything, checked with always(), files() is empty
* exact: Matches exact set of files, checked with isexact(), files()
contains the files to match
* patterns: Matches more complex patterns, checked with anypats(),
files() contains roots of the matched patterns
* prefix: Matches simple 'path:' patterns as prefixes ('foo' matches
both 'foo' and 'foo/bar'), no single method to check, files()
contains the prefixes to match
For completeness, it would be nice to have a method for checking for
the "prefix" type of matcher as well, so let's add that, making it
return True simply when none of the others do.
The larger goal here is to eliminate uses of match.files() in
conditions (i.e. bool(match.files())). The reason for this is that
there are scenarios when you would like to create a "prefix" matcher
that happens to match no files. One example is for 'hg files -I foo
bar'. The narrowmatcher also restricts the set of files given and it
would not surprise me if have bugs caused by that already. Note that
'if m.files() and not m.anypats()' and similar is sometimes used to
catch the "exact" and "prefix" cases above.
This emulates the effects of an hg pull --rebase in which the remote repo
already has one local mq patch
$ cat >> $HGRCPATH <<EOF
> [extensions]
> rebase=
> mq=
>
> [phases]
> publish=False
>
> [alias]
> tglog = log -G --template "{rev}: '{desc}' tags: {tags}\n"
> EOF
$ hg init a
$ cd a
$ hg qinit -c
$ echo c1 > c1
$ hg add c1
$ hg ci -m C1
$ echo r1 > r1
$ hg add r1
$ hg ci -m R1
$ hg up -q 0
$ hg qnew p0.patch -d '1 0'
$ echo p0 > p0
$ hg add p0
$ hg qref -m P0
$ hg qnew p1.patch -d '2 0'
$ echo p1 > p1
$ hg add p1
$ hg qref -m P1
$ hg export qtip > p1.patch
$ hg up -q -C 1
$ hg import p1.patch
applying p1.patch
$ rm p1.patch
$ hg up -q -C qtip
$ hg rebase -v
rebasing 2:13a46ce44f60 "P0" (p0.patch qbase)
resolving manifests
removing p0
getting r1
resolving manifests
getting p0
committing files:
p0
committing manifest
committing changelog
rebasing 3:148775c71080 "P1" (p1.patch qtip)
resolving manifests
note: rebase of 3:148775c71080 created no changes to commit
rebase merging completed
updating mq patch p0.patch to 5:9ecc820b1737
$TESTTMP/a/.hg/patches/p0.patch (glob)
2 changesets found
uncompressed size of bundle content:
344 (changelog)
284 (manifests)
109 p0
109 p1
saved backup bundle to $TESTTMP/a/.hg/strip-backup/13a46ce44f60-5da6ecfb-backup.hg (glob)
2 changesets found
uncompressed size of bundle content:
399 (changelog)
284 (manifests)
109 p0
109 p1
adding branch
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
rebase completed
1 revisions have been skipped
$ hg tglog
@ 3: 'P0' tags: p0.patch qbase qtip tip
|
o 2: 'P1' tags: qparent
|
o 1: 'R1' tags:
|
o 0: 'C1' tags:
$ cd ..
$ hg init b
$ cd b
$ hg qinit -c
$ for i in r0 r1 r2 r3 r4 r5 r6;
> do
> echo $i > $i
> hg ci -Am $i
> done
adding r0
adding r1
adding r2
adding r3
adding r4
adding r5
adding r6
$ hg qimport -r 1:tip
$ hg up -q 0
$ for i in r1 r3 r7 r8;
> do
> echo $i > $i
> hg ci -Am branch2-$i
> done
adding r1
created new head
adding r3
adding r7
adding r8
$ echo somethingelse > r4
$ hg ci -Am branch2-r4
adding r4
$ echo r6 > r6
$ hg ci -Am branch2-r6
adding r6
$ hg up -q qtip
$ HGMERGE=internal:fail hg rebase
rebasing 1:b4bffa6e4776 "r1" (1.diff qbase)
note: rebase of 1:b4bffa6e4776 created no changes to commit
rebasing 2:c0fd129beb01 "r2" (2.diff)
rebasing 3:6ff5b8feed8e "r3" (3.diff)
note: rebase of 3:6ff5b8feed8e created no changes to commit
rebasing 4:094320fec554 "r4" (4.diff)
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
$ HGMERGE=internal:local hg resolve --all
(no more unresolved files)
$ hg rebase --continue
already rebased 1:b4bffa6e4776 "r1" (1.diff qbase) as 057f55ff8f44
already rebased 2:c0fd129beb01 "r2" (2.diff) as 1660ab13ce9a
already rebased 3:6ff5b8feed8e "r3" (3.diff) as 1660ab13ce9a
rebasing 4:094320fec554 "r4" (4.diff)
note: rebase of 4:094320fec554 created no changes to commit
rebasing 5:681a378595ba "r5" (5.diff)
rebasing 6:512a1f24768b "r6" (6.diff qtip)
note: rebase of 6:512a1f24768b created no changes to commit
saved backup bundle to $TESTTMP/b/.hg/strip-backup/b4bffa6e4776-b9bfb84d-backup.hg (glob)
$ hg tglog
@ 8: 'r5' tags: 5.diff qtip tip
|
o 7: 'r2' tags: 2.diff qbase
|
o 6: 'branch2-r6' tags: qparent
|
o 5: 'branch2-r4' tags:
|
o 4: 'branch2-r8' tags:
|
o 3: 'branch2-r7' tags:
|
o 2: 'branch2-r3' tags:
|
o 1: 'branch2-r1' tags:
|
o 0: 'r0' tags:
$ cd ..