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merge: do early copy to deal with issue636
Without copies/renames, merges source names are 1:1 with their
targets. Copies and renames introduce the possibility that there will
be two merges with the same input but different output. By doing the
copy to the destination name before the merge, the actual merge
becomes 1:1 again, and no source is the input to two different merges.
- add a preliminary scan to applyupdates to do copies
- for the merge action, pass the old name (for finding ancestors) and
the new name (for input to the merge) to filemerge
- eliminate the old post-merge copy
- lookup file contents from new name in filemerge
- pass new name to external merge helper
- report merge failure at new name
- add a test
author | Matt Mackall <mpm@selenic.com> |
---|---|
date | Wed, 01 Aug 2007 12:33:12 -0500 |
parents | 8d4fac0a9df7 |
children |
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#!/bin/sh # @ (34) head # | # | o (33) head # | | # o | (32) expand # |\ \ # | o \ (31) expand # | |\ \ # | | o \ (30) expand # | | |\ \ # | | | o | (29) regular commit # | | | | | # | | o | | (28) merge zero known # | | |\ \ \ # o | | | | | (27) collapse # |/ / / / / # | | o---+ (26) merge one known; far right # | | | | | # +---o | | (25) merge one known; far left # | | | | | # | | o | | (24) merge one known; immediate right # | | |\| | # | | o | | (23) merge one known; immediate left # | |/| | | # +---o---+ (22) merge two known; one far left, one far right # | | / / # o | | | (21) expand # |\ \ \ \ # | o---+-+ (20) merge two known; two far right # | / / / # o | | | (19) expand # |\ \ \ \ # +---+---o (18) merge two known; two far left # | | | | # | o | | (17) expand # | |\ \ \ # | | o---+ (16) merge two known; one immediate right, one near right # | | |/ / # o | | | (15) expand # |\ \ \ \ # | o-----+ (14) merge two known; one immediate right, one far right # | |/ / / # o | | | (13) expand # |\ \ \ \ # +---o | | (12) merge two known; one immediate right, one far left # | | |/ / # | o | | (11) expand # | |\ \ \ # | | o---+ (10) merge two known; one immediate left, one near right # | |/ / / # o | | | (9) expand # |\ \ \ \ # | o-----+ (8) merge two known; one immediate left, one far right # |/ / / / # o | | | (7) expand # |\ \ \ \ # +---o | | (6) merge two known; one immediate left, one far left # | |/ / / # | o | | (5) expand # | |\ \ \ # | | o | | (4) merge two known; one immediate left, one immediate right # | |/|/ / # | o / / (3) collapse # |/ / / # o / / (2) collapse # |/ / # o / (1) collapse # |/ # o (0) root set -e commit() { rev=$1 msg=$2 shift 2 if [ "$#" -gt 0 ]; then hg debugsetparents "$@" fi echo $rev > $rev hg add $rev hg ci -d "$rev 0" -m "($rev) $msg" } echo "[extensions]" >> $HGRCPATH echo "graphlog=" >> $HGRCPATH echo % init hg init repo cd repo echo % empty repo hg glog echo % building tree commit 0 "root" commit 1 "collapse" 0 commit 2 "collapse" 1 commit 3 "collapse" 2 commit 4 "merge two known; one immediate left, one immediate right" 1 3 commit 5 "expand" 3 4 commit 6 "merge two known; one immediate left, one far left" 2 5 commit 7 "expand" 2 5 commit 8 "merge two known; one immediate left, one far right" 0 7 commit 9 "expand" 7 8 commit 10 "merge two known; one immediate left, one near right" 0 6 commit 11 "expand" 6 10 commit 12 "merge two known; one immediate right, one far left" 1 9 commit 13 "expand" 9 11 commit 14 "merge two known; one immediate right, one far right" 0 12 commit 15 "expand" 13 14 commit 16 "merge two known; one immediate right, one near right" 0 1 commit 17 "expand" 12 16 commit 18 "merge two known; two far left" 1 15 commit 19 "expand" 15 17 commit 20 "merge two known; two far right" 0 18 commit 21 "expand" 19 20 commit 22 "merge two known; one far left, one far right" 18 21 commit 23 "merge one known; immediate left" 1 22 commit 24 "merge one known; immediate right" 0 23 commit 25 "merge one known; far left" 21 24 commit 26 "merge one known; far right" 18 25 commit 27 "collapse" 21 commit 28 "merge zero known" 1 26 commit 29 "regular commit" 0 commit 30 "expand" 28 29 commit 31 "expand" 21 30 commit 32 "expand" 27 31 commit 33 "head" 18 commit 34 "head" 32 echo % glog -q hg glog -q echo % glog hg glog echo % unused arguments hg glog -q foo || echo failed