changelog: add a `branch` method, bypassing changectx The only way to access the branch of a changeset is currently to create a changectx object and access its `branch()` method. Creating a new Python object is costly and has a huge impact on code doing heavy access to `branch()` (like branchmap). This change introduces a new method on changelog that allows direct access to the branch of a revision. See the next changeset for impact.

branchmap: pass revision insteads of changectx to the update function Creation of changectx objects is very slow, and they are not very useful. We are going to drop them. The first step is to change the function argument type.

perf: add perfbranchmap command The command times the update of a branchmap from its nearest subset or from scratch.

clfilter: enforce hidden filtering on all repository accesses We ensure all repositores created through `mercurial.hg.repository` are "hidden" filtered. This is an even stronger enforcement than 5bb610f87d1d. Citing Matt's response to changeset 5bb610f87d1d installing filtering in dispatch: > Unfortunately, this means that code that doesn't go through dispatch (ie all > those crazy misguided people using Mercurial as a library) are going to see > these hidden changesets. > > Might be better to instead install the filter in localrepo construction by > default and disable it in dispatch.

archival: avoid touching deprecated gzip name attribute The existing workaround didn't work when no filename was specified. If running in a context with warnings enabled and subsecond mtime it gave a warning: DeprecationWarning: use the name attribute

archival: pass integer to struct.pack int field instead of float If running in a context with warnings enabled and subsecond mtime it gave a warning: DeprecationWarning: integer argument expected, got float

largefiles: fix update from a merge with removed files A situation with this case could happen after interrupting an update. Update would fail with: abort: No such file or directory: $TESTTMP/f/.hglf/sub2/large6 Update from a merge without using clean is not possible anyway, so this patch takes a step in the right direction so it gets as far as reporting the right error.

largefiles: fix revert removing a largefile from a merge Before revert could fail with: abort: .hglf/large@33fdd332ec64: not found in manifest! The LookupError will now be caught and handled correctly.

largefiles: remove unused proto.refuseclient code Should have been removed with other pre-1.9 code in 7c604d8c7e83.

subrepo: make 'in subrepo' string easier to find by external tools This patch is meant to make it easier for tools that wrap the mercurial output (such as TortoiseHg) to find the "in subrepo MYSUBREPO" string that (since 9e3910db4e78) is appended after subrepo error messages, particularly when the mercurial output is translated to a non-English language. The message remains the same but the '%s' that was used to prepend the original error message in front of the 'in subrepo' string has been moved out of the translatable string. As an example of the usefulness of making it easy to look for "in subrepo MYSUBREPO" strings, TortoiseHg looks for these strings in error messages in order to "linkify them" (i.e. convert "MYSUBREPO" into alink to the corresponding subrepo). The original string made it hard for a tool such as TortoiseHg to look for the translated string on mercurial's output because the translated string contained the error message itself. This meant that a regular expression was required to ignore the error message part. With this change TortoiseHg can just get the translated "(in subrepo %s)" string, substitute %s for the subrepo path (which it gets from the subrepo exception) and simply search for the resulting string (no regular expression needed, or at least a much simpler regular expression could be used). Additionaly, the existing string could lead a translator mistakenly assume that it was possible invert the order of the %s (error and subrepo path) fields, which would not work because the string interpolation was position based.