Previously, branch names were ideally manipulated as UTF-8 strings,
because they were stored as UTF-8 in the dirstate and the changelog
and could not be safely converted to the local encoding and back.
However, only about 80% of branch name code was actually using the
right encoding conventions. This patch uses the localstr addition to
allow working on branch names as local strings, which simplifies
handling so that the previously incorrect code becomes correct.
Comparing sizes is cheaper than comparing file contents, as it does not
involve reading the file on disk or from the filelog.
It is however not always possible: some extensions, or encode filters,
change data when extracting it to the working directory.
Given a .hgsub file containing
lib/libfoo = http://server/libfoo
the 'lib/libfoo' subrepo will be cloned from 'http://server/libfoo'.
This changeset introduces a remapping mechanism whereby the source
paths (the right-hand sides) in the .hgsub file can be remapped. This
subpaths section
[subpaths]
http://server = /local
will result in the 'lib/libfoo' subrepo being cloned from
'/local/libfoo' instead of from 'http://server/libfoo'.
The patterns (left-hand sides) are really regular expressions and the
replacement strings (right-hand sides) can refer to matched groups
using normal backreferences. This can be used for more complicated
replacements such as
[subpaths]
http://server/(.*)-hg/ = http://hg.server/\1/
which replaces 'http://server/foo-hg/' with 'http://hg.server/foo/'.
All patterns are applied in the order by which they are listed in the
config files.
This is similar to the __builtin__.cmp behaviour, but still not
straightforward, as the dailylife meaning of a comparison usually is
"find out if they are different".
Apparently we mostly used filectx.cmp(workingfilectx.read()), so no error
was ever triggered, but since all cmp() methods return True when content
are different, that == should in fact be !=
If some code tries to query ignored or clean files without first
calling the explicit status() method to query them, it will raise
an exception (indicating a software bug).
workingctx.clean() and memctx.clean() have both been returning ignored files
since their creation. This patch fixes clean() while introducing a method for
querying ignored files. The new status() method can be used to explicitly
override the default (fast) arguments used by the _status property.
This bug happens if the filesystem doesn't support exec-bit, during merges,
for example in 0b01431fee25 on the hg repo.
If f is not in p1, but is in p2 and has the x-bit in p2, since the dirstate is
based on p1, and the FS doesn't support the exec-bit, the dirstate can't
"guess" the right bit.
We instead fix it in workingcontext.flags()/manifest.
On some large repos, copy detection could spend > 10min using
fctx.ancestor() to determine if file revisions were actually related.
Because ancestor must traverse history to the root to determine the
GCA, it was doing a lot more work than necessary. With this
replacement, same status -r a:b takes ~3 seconds.
When there are no renames involved, we shortcut to the changeset
ancestor. This resolves most cases.
Note that Mercurial's rename philosophy elsewhere is that a file's
name is signficant and rename data is only consulted when a file of
the same name is absent.
This allows extensions that modify changeset metadata (e.g.
description) by overriding methods of changectx to get consistent
behavior from all log-like commands, regardless of whether templates
or styles are used. Without this, overriding changectx methods works
if you use styles or templates, but not with default log format.
This meant adding filectx.extra() for consistency with changectx.
