Mercurial > hg
view tests/test-histedit-non-commute.t @ 28261:2ab59ac06b76
chg: detect chg started by chg
Sometimes people may create a symbol link from hg to chg, or write a wrapper
script named hg calling chg. Without $HG and $CHGHG set, this will lead to
chg executes itself causing deadlock. The user will notice chg hangs for some
time and aborts with a timed out message, without knowing the root cause and
how to solve it.
This patch sets a dummy environment variable before executing hg to detect
this situation, and print a fatal message with some possible solutions.
CHGINTERNALMARK is set by chg client to detect the situation that chg is
started by chg. It is temporary and should be dropped to avoid possible
side effects.
| author | Jun Wu <quark@fb.com> |
|---|---|
| date | Fri, 26 Feb 2016 14:13:12 +0000 |
| parents | e7ff83b2bcfe |
| children | c100dbd593e2 |
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$ . "$TESTDIR/histedit-helpers.sh" $ cat >> $HGRCPATH <<EOF > [extensions] > histedit= > EOF $ initrepo () > { > hg init $1 > cd $1 > for x in a b c d e f ; do > echo $x$x$x$x$x > $x > hg add $x > done > hg ci -m 'Initial commit' > for x in a b c d e f ; do > echo $x > $x > hg ci -m $x > done > echo 'I can haz no commute' > e > hg ci -m 'does not commute with e' > cd .. > } $ initrepo r1 $ cd r1 Initial generation of the command files $ EDITED="$TESTTMP/editedhistory" $ hg log --template 'pick {node|short} {rev} {desc}\n' -r 3 >> $EDITED $ hg log --template 'pick {node|short} {rev} {desc}\n' -r 4 >> $EDITED $ hg log --template 'pick {node|short} {rev} {desc}\n' -r 7 >> $EDITED $ hg log --template 'pick {node|short} {rev} {desc}\n' -r 5 >> $EDITED $ hg log --template 'pick {node|short} {rev} {desc}\n' -r 6 >> $EDITED $ cat $EDITED pick 65a9a84f33fd 3 c pick 00f1c5383965 4 d pick 39522b764e3d 7 does not commute with e pick 7b4e2f4b7bcd 5 e pick 500cac37a696 6 f log before edit $ hg log --graph @ changeset: 7:39522b764e3d | tag: tip | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: does not commute with e | o changeset: 6:500cac37a696 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: f | o changeset: 5:7b4e2f4b7bcd | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: e | o changeset: 4:00f1c5383965 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: d | o changeset: 3:65a9a84f33fd | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: c | o changeset: 2:da6535b52e45 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: b | o changeset: 1:c1f09da44841 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: a | o changeset: 0:1715188a53c7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Initial commit edit the history $ hg histedit 3 --commands $EDITED 2>&1 | fixbundle 2 files updated, 0 files merged, 0 files removed, 0 files unresolved merging e warning: conflicts while merging e! (edit, then use 'hg resolve --mark') Fix up the change (pick 39522b764e3d) (hg histedit --continue to resume) abort the edit $ hg histedit --abort 2>&1 | fixbundle 2 files updated, 0 files merged, 0 files removed, 0 files unresolved second edit set $ hg log --graph @ changeset: 7:39522b764e3d | tag: tip | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: does not commute with e | o changeset: 6:500cac37a696 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: f | o changeset: 5:7b4e2f4b7bcd | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: e | o changeset: 4:00f1c5383965 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: d | o changeset: 3:65a9a84f33fd | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: c | o changeset: 2:da6535b52e45 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: b | o changeset: 1:c1f09da44841 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: a | o changeset: 0:1715188a53c7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Initial commit edit the history $ hg histedit 3 --commands $EDITED 2>&1 | fixbundle 2 files updated, 0 files merged, 0 files removed, 0 files unresolved merging e warning: conflicts while merging e! (edit, then use 'hg resolve --mark') Fix up the change (pick 39522b764e3d) (hg histedit --continue to resume) fix up $ echo 'I can haz no commute' > e $ hg resolve --mark e (no more unresolved files) continue: hg histedit --continue $ hg histedit --continue 2>&1 | fixbundle merging e warning: conflicts while merging e! (edit, then use 'hg resolve --mark') Fix up the change (pick 7b4e2f4b7bcd) (hg histedit --continue to resume) This failure is caused by 7b4e2f4b7bcd "e" not rebasing the non commutative former children. just continue this time $ hg revert -r 'p1()' e $ hg resolve --mark e (no more unresolved files) continue: hg histedit --continue $ hg histedit --continue 2>&1 | fixbundle 7b4e2f4b7bcd: empty changeset log after edit $ hg log --graph @ changeset: 6:7efe1373e4bc | tag: tip | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: f | o changeset: 5:e334d87a1e55 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: does not commute with e | o changeset: 4:00f1c5383965 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: d | o changeset: 3:65a9a84f33fd | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: c | o changeset: 2:da6535b52e45 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: b | o changeset: 1:c1f09da44841 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: a | o changeset: 0:1715188a53c7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Initial commit start over $ cd .. $ initrepo r2 $ cd r2 $ rm $EDITED $ hg log --template 'pick {node|short} {rev} {desc}\n' -r 3 >> $EDITED $ hg log --template 'pick {node|short} {rev} {desc}\n' -r 4 >> $EDITED $ hg log --template 'mess {node|short} {rev} {desc}\n' -r 7 >> $EDITED $ hg log --template 'pick {node|short} {rev} {desc}\n' -r 5 >> $EDITED $ hg log --template 'pick {node|short} {rev} {desc}\n' -r 6 >> $EDITED $ cat $EDITED pick 65a9a84f33fd 3 c pick 00f1c5383965 4 d mess 39522b764e3d 7 does not commute with e pick 7b4e2f4b7bcd 5 e pick 500cac37a696 6 f edit the history, this time with a fold action $ hg histedit 3 --commands $EDITED 2>&1 | fixbundle 2 files updated, 0 files merged, 0 files removed, 0 files unresolved merging e warning: conflicts while merging e! (edit, then use 'hg resolve --mark') Fix up the change (mess 39522b764e3d) (hg histedit --continue to resume) $ echo 'I can haz no commute' > e $ hg resolve --mark e (no more unresolved files) continue: hg histedit --continue $ hg histedit --continue 2>&1 | fixbundle merging e warning: conflicts while merging e! (edit, then use 'hg resolve --mark') Fix up the change (pick 7b4e2f4b7bcd) (hg histedit --continue to resume) second edit also fails, but just continue $ hg revert -r 'p1()' e $ hg resolve --mark e (no more unresolved files) continue: hg histedit --continue $ hg histedit --continue 2>&1 | fixbundle 7b4e2f4b7bcd: empty changeset post message fix $ hg log --graph @ changeset: 6:7efe1373e4bc | tag: tip | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: f | o changeset: 5:e334d87a1e55 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: does not commute with e | o changeset: 4:00f1c5383965 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: d | o changeset: 3:65a9a84f33fd | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: c | o changeset: 2:da6535b52e45 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: b | o changeset: 1:c1f09da44841 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: a | o changeset: 0:1715188a53c7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Initial commit $ cd ..