transaction: quietly rollback if no other changes than temporary files
If no actual change have been made, we don't really need to roll them back. We
only have to cleanup some temporary files and it seems reasonable to do that
quietly.
This will help us to use the transaction in wider context¹ without impacting the
user experience.
[1] as in Python context managers that lives longer.
#testcases continuecommand continueflag
Test rebase --continue with rebasestate written by legacy client
$ cat >> $HGRCPATH <<EOF
> [extensions]
> rebase=
> drawdag=$TESTDIR/drawdag.py
> EOF
#if continueflag
$ cat >> $HGRCPATH <<EOF
> [alias]
> continue = rebase --continue
> EOF
#endif
$ hg init
$ hg debugdrawdag <<'EOF'
> D H
> | |
> C G
> | |
> B F
> | |
> Z A E
> \|/
> R
> EOF
$ for r in A B C D E F G H R Z
> do
> eval node_$r=$(hg log -r $r -T '{node}')
> done
rebasestate generated by a legacy client running "hg rebase -r B+D+E+G+H -d Z"
$ touch .hg/last-message.txt
$ cat > .hg/rebasestate <<EOF
> 0000000000000000000000000000000000000000
> $node_Z
> 0000000000000000000000000000000000000000
> 0
> 0
> 0
>
> $node_A:-2
> $node_E:0000000000000000000000000000000000000000
> $node_B:0000000000000000000000000000000000000000
> $node_F:-3
> $node_C:-3
> $node_G:0000000000000000000000000000000000000000
> $node_D:0000000000000000000000000000000000000000
> $node_H:0000000000000000000000000000000000000000
> EOF
#if continuecommand
$ hg continue --dry-run
rebase in progress, will be resumed
#endif
$ hg continue
rebasing 4:c1e6b162678d B "B"
rebasing 8:6f7a236de685 D "D"
rebasing 2:de008c61a447 E "E"
rebasing 7:d2fa1c02b240 G "G"
rebasing 9:6582e6951a9c H tip "H"
warning: orphaned descendants detected, not stripping c1e6b162678d, de008c61a447
saved backup bundle to $TESTTMP/.hg/strip-backup/6f7a236de685-9880a3dc-rebase.hg
$ hg log -G -T '{rev}:{node|short} {desc}\n'
o 11:721b8da0a708 H
|
o 10:9d65695ec3c2 G
|
o 9:21c8397a5d68 E
|
| o 8:fc52970345e8 D
| |
| o 7:eac96551b107 B
|/
| o 6:bd5548558fcf C
| |
| | o 5:aeba276fcb7d F
| | |
| o | 4:c1e6b162678d B
| | |
o | | 3:f424eb6a8c01 Z
| | |
+---o 2:de008c61a447 E
| |
| o 1:21a6c4502885 A
|/
o 0:b41ce7760717 R