check-commit: catch both patterns of double empty lines

revsetbenchmarks: ignore empty lines Before this change, empty lines were seen as an entry and the benchmark tried to run benchmark for "".

bundle2: reword debug message for invalid .hgtags data marmoute requested a follow-up to make the verb the first word.

bundle2.getunbundler: rename "header" to "magicstring" This is more consistent with the name used in the bundler class. Thanks goes to Martin von Zweigbergk for pointing this out.

ancestors: prefetch method outside of the loop 15412bba5a68 is yet another example where this is worthwhile when it comes to performance, we blindly do it for all 'lazyancestors' methods.

templater: fix handling of \-escapes in raw string literals The backslash character should start escape sequences no matter if a string is prefixed with 'r'. They are just not interpreted as escape sequences in raw strings. revset.tokenize() handles them correctly, but templater didn't. https://docs.python.org/2/reference/lexical_analysis.html#string-literals

templater: evaluate "query" argument passed to revset() revset() had the same issue as 9452112c8eb0. It crashed by passing non-string expression.

match: let 'path:.' and 'path:' match everything (issue4687) Previously, both queries exited with code 1, printing nothing. The pattern in the latter query is normalized to '.', so it is really the same case.

changelog: document the 'readpending' method I happen to have spent some time understanding this logic, so I'm leaving documentation for the next poor fellow.

revsets: use '&' instead of '.filter' in head More high level operations are more likely to be optimised.