phases: avoid N² behavior in `advanceboundary`
We allowed duplicated entries in the deque, which each entry could potentially
insert all its ancestors. So advancing boundary for the full repository would
mean each revision would walk all its ancestors, resulting in O(N²) iteration.
For repository of any decent size, N² is quickly insane.
We introduce a simple set to avoid this and get back to reasonable performance.
Testing recorded "modified" files for merge commit
==================================================
This file shows what hg says are "modified" files for a merge commit
(hg log -T {files}), somewhat exhaustively.
This test file shows merges that involves files contents changing
For merges taht involves executable bit changing, check test-merge-combination-exec-bytes.t
For testing of multiple corner case, check test-merge-combination-misc.t
Case with multiple or zero merge ancestors, copies/renames, and identical file contents
with different filelog revisions are not currently covered.
$ . $TESTDIR/testlib/merge-combination-util.sh
All the merges of various file contents.
$ range () {
> max=0
> for i in $@; do
> if [ $i = - ]; then continue; fi
> if [ $i -gt $max ]; then max=$i; fi
> done
> $TESTDIR/seq.py `expr $max + 1`
> }
$ isgood () { true; }
$ createfile () {
> if [ -f a ] && [ "`cat a`" = $1 ]
> then touch $file
> else echo $v > a
> fi
> }
$ genmerges
1111 : agree on ""
1112 : agree on "a"
111- : agree on "a"
1121 : agree on "a"
1122 : agree on ""
1123 : agree on "a"
112- : agree on "a"
11-1 : hg said "", expected "a"
11-2 : agree on "a"
11-- : agree on ""
1211 : agree on "a"
1212 : agree on ""
1213 : agree on "a"
121- : agree on "a"
1221 : agree on "a"
1222 : agree on ""
1223 : agree on "a"
122- : agree on "a"
1231 C: agree on "a"
1232 C: agree on "a"
1233 C: agree on "a"
1234 C: agree on "a"
123- C: agree on "a"
12-1 C: agree on "a"
12-2 C: hg said "", expected "a"
12-3 C: agree on "a"
12-- C: agree on "a"
1-11 : hg said "", expected "a"
1-12 : agree on "a"
1-1- : agree on ""
1-21 C: agree on "a"
1-22 C: hg said "", expected "a"
1-23 C: agree on "a"
1-2- C: agree on "a"
1--1 : agree on "a"
1--2 : agree on "a"
1--- : agree on ""
-111 : agree on ""
-112 : agree on "a"
-11- : agree on "a"
-121 C: agree on "a"
-122 C: agree on "a"
-123 C: agree on "a"
-12- C: agree on "a"
-1-1 : agree on ""
-1-2 : agree on "a"
-1-- : agree on "a"
--11 : agree on ""
--12 : agree on "a"
--1- : agree on "a"
---1 : agree on "a"
---- : agree on ""