histedit: refuse to edit history that contains merges (issue3962)

largefiles: overridematch() should replace the file path instead of extending (issue3934)

revlog: handle hidden revs in _partialmatch (issue3979) Looking up hidden prefixes could cause a no node exception Looking up unique non-hidden prefixes could be ambiguous

fileset: handle underbar in symbols This was documented, but not implemented.

heads: modernize documentation (issue3992) The old docs emphasized topological heads rather than branch heads and incorrectly defined branch heads as not having children rather than descendants.

convert: catch empty origpaths in svn gettags (issue3941)

template: fix tabindent docstring (issue2880)

merge default into stable for 2.7 code freeze

osutil: consider WindowsError's behaviour to support python 2.4 on Windows This change treat the ESRCH error as ENOENT like WindowsError class does in python 2.5 or later. Without this change, some try..execpt code which expects errno is ENOENT may fail. Actually hg command does not work with python 2.4 on Windows. CreateFile() will fail with error code ESRCH when parent directory of specified path is not exist, or ENOENT when parent directory exist but file is not exist. Two errors are same in the mean of "file is not exist". So WindowsError class treats error code ESRCH as ENOENT in python 2.5 or later, but python 2.4 does not. Actual results with python 2.4: >>> errno.ENOENT 2 >>> errno.ESRCH 3 >>> WindowsError(3, 'msg').errno 3 >>> WindowsError(3, 'msg').args (3, 'msg') And with python 2.5 (or later): >>> errno.ENOENT 2 >>> errno.ESRCH 3 >>> WindowsError(3, 'msg').errno 2 >>> WindowsError(3, 'msg').args (3, 'msg') Note that there is no need to fix osutil.c because it never be used with python 2.4.

churn: split email aliases from the right This splits churn email aliases from the right, to enable incorrectly-specified addresses that include equal signs to be mapped to correct addresses. This will enable aliasing of bad addresses (typically typos) such as: sername=myusername that appear in the churn output through a churn alias such as: sername=myusername = myusername whereas previously splitting from the left would not enable this behavior.