archive: set date to 1980 for very old zip files The zip file format stores the date using "MS-DOS format" which apparently means that they use 1980 as their epoch. Python's zipfile module emits deprecation warnings of this form /usr/lib/python2.6/zipfile.py:1108: DeprecationWarning: struct integer overflow masking is deprecated self.fp.write(zinfo.FileHeader()) /usr/lib/python2.6/zipfile.py:1108: DeprecationWarning: 'H' format requires 0 <= number <= 65535 self.fp.write(zinfo.FileHeader()) /home/mg/src/mercurial-crew/mercurial/archival.py:169: DeprecationWarning: struct integer overflow masking is deprecated self.z.close() /home/mg/src/mercurial-crew/mercurial/archival.py:169: DeprecationWarning: 'H' format requires 0 <= number <= 65535 self.z.close() when it is given such old timestamps. This fixes this by silently clamping the date to 1980.

Merge with stable

test-eol-update: record new results as correct Changeset 0852da25a31b changed the result of this test. The 'hg update 0' command, which causes a merge of modified a.txt, now leaves a.txt in the EOLN format specified by .hgeol as it was committed in revision 0. Previously, it used the .hgeol contents from the working directory before the update.

tests: add exit codes to unified tests

merge with stable

merge: suggest 'hg up -C .' for discarding changes, not 'hg up -C' Without specifying the parent revision of the working copy, users will update to tip, which is most likely the other head they were trying to merge, not the revision they were at before the merge.