log: add -L/--line-range option to follow file history by line range
We add an experimental -L/--line-range option to 'hg log' taking file patterns
along with a line range using the (new) FILE,FROMLINE-TOLINE syntax where FILE
may be a pattern (matching exactly one file). The resulting history is similar
to what the "followlines" revset except that, if --patch is specified,
only diff hunks within specified line range are shown.
Basically, this brings the CLI on par with what currently only exists in hgweb
through line selection in "file" and "annotate" views resulting in a file log
with filtered patch to only display followed line range.
The option may be specified multiple times and can be combined with --rev and
regular file patterns to further restrict revisions. Usage of this option
requires --follow; revisions are shown in descending order and renames are
followed. Only the --graph option is currently not supported.
The UI is the result of a consensus from review feedback at:
https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-October/106749.html
The implementation spreads between commands.log() and cmdutil module.
In commands.log(), the main loop may now use a "hunksfilter" factory (similar
to "filematcher") that, for a given "rev", produces a filtering function
for diff hunks for a given file context object.
The logic to build revisions from -L/--line-range options lives in
cmdutil.getloglinerangerevs() which produces "revs", "filematcher" and
"hunksfilter" information. Revisions obtained by following files' line range
are filtered if they do not match the revset specified by --rev option. If
regular FILE arguments are passed along with -L options, both filematchers are
combined into a new matcher.
.. feature::
Add an experimental -L/--line-range FILE,FROMLINE-TOLINE option to 'hg log'
command to follow the history of files by line range. In combination with
-p/--patch option, only diff hunks within specified line range will be
displayed. Feedback, especially on UX aspects, is welcome.
#require bzr
$ . "$TESTDIR/bzr-definitions"
empty directory
$ mkdir test-empty
$ cd test-empty
$ bzr init -q source
$ cd source
$ echo content > a
$ bzr add -q a
$ bzr commit -q -m 'Initial add'
$ mkdir empty
$ bzr add -q empty
$ bzr commit -q -m 'Empty directory added'
$ echo content > empty/something
$ bzr add -q empty/something
$ bzr commit -q -m 'Added file into directory'
$ cd ..
$ hg convert source source-hg
initializing destination source-hg repository
scanning source...
sorting...
converting...
2 Initial add
1 Empty directory added
0 Added file into directory
$ manifest source-hg 1
% manifest of 1
644 a
$ manifest source-hg tip
% manifest of tip
644 a
644 empty/something
$ cd ..
directory renames
$ mkdir test-dir-rename
$ cd test-dir-rename
$ bzr init -q source
$ cd source
$ mkdir tpyo
$ echo content > tpyo/something
$ bzr add -q tpyo
$ bzr commit -q -m 'Added directory'
$ bzr mv tpyo typo
tpyo => typo
$ bzr commit -q -m 'Oops, typo'
$ cd ..
$ hg convert source source-hg
initializing destination source-hg repository
scanning source...
sorting...
converting...
1 Added directory
0 Oops, typo
$ manifest source-hg 0
% manifest of 0
644 tpyo/something
$ manifest source-hg tip
% manifest of tip
644 typo/something
$ cd ..
nested directory renames
$ mkdir test-nested-dir-rename
$ cd test-nested-dir-rename
$ bzr init -q source
$ cd source
$ mkdir -p firstlevel/secondlevel/thirdlevel
$ echo content > firstlevel/secondlevel/file
$ echo this_needs_to_be_there_too > firstlevel/secondlevel/thirdlevel/stuff
$ bzr add -q firstlevel
$ bzr commit -q -m 'Added nested directories'
$ bzr mv firstlevel/secondlevel secondlevel
firstlevel/secondlevel => secondlevel
$ bzr commit -q -m 'Moved secondlevel one level up'
$ cd ..
$ hg convert source source-hg
initializing destination source-hg repository
scanning source...
sorting...
converting...
1 Added nested directories
0 Moved secondlevel one level up
$ manifest source-hg tip
% manifest of tip
644 secondlevel/file
644 secondlevel/thirdlevel/stuff
$ cd ..
directory remove
$ mkdir test-dir-remove
$ cd test-dir-remove
$ bzr init -q source
$ cd source
$ mkdir src
$ echo content > src/sourcecode
$ bzr add -q src
$ bzr commit -q -m 'Added directory'
$ bzr rm -q src
$ bzr commit -q -m 'Removed directory'
$ cd ..
$ hg convert source source-hg
initializing destination source-hg repository
scanning source...
sorting...
converting...
1 Added directory
0 Removed directory
$ manifest source-hg 0
% manifest of 0
644 src/sourcecode
$ manifest source-hg tip
% manifest of tip
$ cd ..
directory replace
$ mkdir test-dir-replace
$ cd test-dir-replace
$ bzr init -q source
$ cd source
$ mkdir first second
$ echo content > first/file
$ echo morecontent > first/dummy
$ echo othercontent > second/something
$ bzr add -q first second
$ bzr commit -q -m 'Initial layout'
$ bzr mv first/file second/file
first/file => second/file
$ bzr mv first third
first => third
$ bzr commit -q -m 'Some conflicting moves'
$ cd ..
$ hg convert source source-hg
initializing destination source-hg repository
scanning source...
sorting...
converting...
1 Initial layout
0 Some conflicting moves
$ manifest source-hg tip
% manifest of tip
644 second/file
644 second/something
644 third/dummy
$ cd ..
divergent nested renames (issue3089)
$ mkdir test-divergent-renames
$ cd test-divergent-renames
$ bzr init -q source
$ cd source
$ mkdir -p a/c
$ echo a > a/fa
$ echo c > a/c/fc
$ bzr add -q a
$ bzr commit -q -m 'Initial layout'
$ bzr mv a b
a => b
$ mkdir a
$ bzr add a
add(ed|ing) a (re)
$ bzr mv b/c a/c
b/c => a/c
$ bzr status
added:
a/
renamed:
a/? => b/? (re)
a/c/? => a/c/? (re)
$ bzr commit -q -m 'Divergent renames'
$ cd ..
$ hg convert source source-hg
initializing destination source-hg repository
scanning source...
sorting...
converting...
1 Initial layout
0 Divergent renames
$ hg -R source-hg st -C --change 1
A b/fa
a/fa
R a/fa
$ hg -R source-hg manifest -r 1
a/c/fc
b/fa
$ cd ..