global: mass rewrite to use modern exception syntax Python 2.6 introduced the "except type as instance" syntax, replacing the "except type, instance" syntax that came before. Python 3 dropped support for the latter syntax. Since we no longer support Python 2.4 or 2.5, we have no need to continue supporting the "except type, instance". This patch mass rewrites the exception syntax to be Python 2.6+ and Python 3 compatible. This patch was produced by running `2to3 -f except -w -n .`.

check-code: detect legacy octal syntax Now that we have mass rewriting all files to use the modern octal syntax, detect and ban the legacy syntax, which is no longer supported in Python 3.

global: mass rewrite to use modern octal syntax Python 2.6 introduced a new octal syntax: "0oXXX", replacing "0XXX". The old syntax is not recognized in Python 3 and will result in a parse error. Mass rewrite all instances of the old octal syntax to the new syntax. This patch was generated by `2to3 -f numliterals -w -n .` and the diff was selectively recorded to exclude changes to "<N>l" syntax conversion, which will be handled separately.

revert: change the direction of revert -i After the discussion on the list about hg revert -i, it seems like we are satisfied with what we called proposition 2. It shows the changes to revert in the same direction as hg diff. This patch makes it the default option. It changes all the + in - and vice versa in the tests for revert -i.

revert: change a test to make the change of direction of revert -i easier Currently we are handling editing of newly-added files with the interactive interface. We are not handling editing of deleted files. In the test for revert, we were editing a newly-added file. Since we want to change the direction of revert -i, this editing of a newly-added file will become editing of a deleted file. Since we don't support that, this patch changes the test to make the rest of the series cleaner.

parser: update documentation about tokenizer and elements

parser: accept iterator of tokens instead of tokenizer function and program This can simplify the interface of parse() function. Our tokenizer tends to have optional arguments other than the message to be parsed. Before this patch, the "lookup" argument existed only for the revset, and the templater had to pack [program, start, end] to be passed to its tokenizer.

verify: print hint to run debugrebuildfncache Corrupt fncache is now a recoverable operation. Inform the user how to recover from this warning.

repair: add functionality to rebuild fncache Currently, there is no way to recover from a missing or corrupt fncache file in place (a clone is required). For certain use cases such as servers and with large repositories, an in-place repair may be desirable. This patch adds functionality for in-place repair of the fncache. The `hg debugrebuildfncache` command is introduced. It ensures the fncache is up to date by reconstructing the fncache from all seen files encountered during a brute force traversal of the repository's entire history. The command will add missing entries and will prune excess ones. Currently, the command no-ops unless the repository has the fncache requirement. The command could later grow the ability to "upgrade" an existing repository to be fncache enabled, if desired. When testing this patch on a local clone of the Firefox repository, it removed a bunch of entries. Investigation revealed that removed entries belonged to empty (0 byte size) .i filelogs. The functionality for pruning fncache of stripped revlogs was introduced in f49d60fa40a5, so the presence of these entries likely predates this feature.

import: cross-reference patch.fuzz option from `hg help import`