tests/test-pager.t
author Jun Wu <quark@fb.com>
Sat, 11 Jun 2016 20:25:49 +0100
changeset 29344 bb3d5c20eaf6
parent 29343 e095b9e753f7
child 30847 e12553cfd0a4
permissions -rw-r--r--
chg: exec pager in child process Before this patch, chg uses the old pager behavior (pre 369741ef7253), which executes pager in the main process. The user will see the exit code of the pager, instead of the hg command. Like 369741ef7253, this patch fixes the behavior by executing the pager in the child process, and wait for it at the end of the main process.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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  $ cat >> fakepager.py <<EOF
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  > import sys
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  > for line in sys.stdin:
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  >     sys.stdout.write('paged! %r\n' % line)
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  > EOF
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Enable ui.formatted because pager won't fire without it, and set up
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pager and tell it to use our fake pager that lets us see when the
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pager was running.
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  $ cat >> $HGRCPATH <<EOF
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  > [ui]
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  > formatted = yes
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  > [extensions]
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  > pager=
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  > [pager]
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  > pager = python $TESTTMP/fakepager.py
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  > EOF
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  $ hg init repo
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  $ cd repo
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  $ echo a >> a
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  $ hg add a
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  $ hg ci -m 'add a'
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  $ for x in `python $TESTDIR/seq.py 1 10`; do
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  >   echo a $x >> a
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  >   hg ci -m "modify a $x"
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  > done
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By default diff and log are paged, but summary is not:
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  $ hg diff -c 2 --pager=yes
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  paged! 'diff -r f4be7687d414 -r bce265549556 a\n'
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  paged! '--- a/a\tThu Jan 01 00:00:00 1970 +0000\n'
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  paged! '+++ b/a\tThu Jan 01 00:00:00 1970 +0000\n'
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  paged! '@@ -1,2 +1,3 @@\n'
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  paged! ' a\n'
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  paged! ' a 1\n'
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  paged! '+a 2\n'
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  $ hg log --limit 2
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  paged! 'changeset:   10:46106edeeb38\n'
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  paged! 'tag:         tip\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 10\n'
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  paged! '\n'
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  paged! 'changeset:   9:6dd8ea7dd621\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 9\n'
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  paged! '\n'
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  $ hg summary
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  parent: 10:46106edeeb38 tip
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   modify a 10
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  branch: default
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  commit: (clean)
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  update: (current)
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  phases: 11 draft
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We can enable the pager on summary:
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  $ hg --config pager.attend-summary=yes summary
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  paged! 'parent: 10:46106edeeb38 tip\n'
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  paged! ' modify a 10\n'
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  paged! 'branch: default\n'
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  paged! 'commit: (clean)\n'
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  paged! 'update: (current)\n'
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  paged! 'phases: 11 draft\n'
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If we completely change the attend list that's respected:
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  $ hg --config pager.attend-diff=no diff -c 2
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  diff -r f4be7687d414 -r bce265549556 a
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  --- a/a	Thu Jan 01 00:00:00 1970 +0000
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  +++ b/a	Thu Jan 01 00:00:00 1970 +0000
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  @@ -1,2 +1,3 @@
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   a
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   a 1
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  +a 2
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  $ hg --config pager.attend=summary diff -c 2
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  diff -r f4be7687d414 -r bce265549556 a
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  --- a/a	Thu Jan 01 00:00:00 1970 +0000
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  +++ b/a	Thu Jan 01 00:00:00 1970 +0000
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  @@ -1,2 +1,3 @@
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   a
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   a 1
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  +a 2
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If 'log' is in attend, then 'history' should also be paged:
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  $ hg history --limit 2 --config pager.attend=log
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  paged! 'changeset:   10:46106edeeb38\n'
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  paged! 'tag:         tip\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 10\n'
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  paged! '\n'
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  paged! 'changeset:   9:6dd8ea7dd621\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 9\n'
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  paged! '\n'
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Possible bug: history is explicitly ignored in pager config, but
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because log is in the attend list it still gets pager treatment.
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  $ hg history --limit 2 --config pager.attend=log \
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  >   --config pager.ignore=history
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  paged! 'changeset:   10:46106edeeb38\n'
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  paged! 'tag:         tip\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 10\n'
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  paged! '\n'
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  paged! 'changeset:   9:6dd8ea7dd621\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 9\n'
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  paged! '\n'
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Possible bug: history is explicitly marked as attend-history=no, but
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it doesn't fail to get paged because log is still in the attend list.
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  $ hg history --limit 2 --config pager.attend-history=no
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  paged! 'changeset:   10:46106edeeb38\n'
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  paged! 'tag:         tip\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 10\n'
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  paged! '\n'
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  paged! 'changeset:   9:6dd8ea7dd621\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 9\n'
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  paged! '\n'
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Possible bug: disabling pager for log but enabling it for history
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doesn't result in history being paged.
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  $ hg history --limit 2 --config pager.attend-log=no \
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  > --config pager.attend-history=yes
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  changeset:   10:46106edeeb38
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  tag:         tip
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  user:        test
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  date:        Thu Jan 01 00:00:00 1970 +0000
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  summary:     modify a 10
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  changeset:   9:6dd8ea7dd621
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  user:        test
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  date:        Thu Jan 01 00:00:00 1970 +0000
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  summary:     modify a 9
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Pager with color enabled allows colors to come through by default,
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even though stdout is no longer a tty.
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  $ cat >> $HGRCPATH <<EOF
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  > [extensions]
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  > color=
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  > [color]
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  > mode = ansi
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  > EOF
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  $ hg log --limit 3
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  paged! '\x1b[0;33mchangeset:   10:46106edeeb38\x1b[0m\n'
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  paged! 'tag:         tip\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 10\n'
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  paged! '\n'
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  paged! '\x1b[0;33mchangeset:   9:6dd8ea7dd621\x1b[0m\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 9\n'
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  paged! '\n'
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  paged! '\x1b[0;33mchangeset:   8:cff05a6312fe\x1b[0m\n'
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  paged! 'user:        test\n'
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  paged! 'date:        Thu Jan 01 00:00:00 1970 +0000\n'
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  paged! 'summary:     modify a 8\n'
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  paged! '\n'
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Pager works with shell aliases.
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  $ cat >> $HGRCPATH <<EOF
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  > [alias]
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  > echoa = !echo a
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  > EOF
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  $ hg echoa
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  a
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  $ hg --config pager.attend-echoa=yes echoa
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  paged! 'a\n'
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Pager works with hg aliases including environment variables.
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  $ cat >> $HGRCPATH <<'EOF'
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  > [alias]
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  > printa = log -T "$A\n" -r 0
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  > EOF
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  $ A=1 hg --config pager.attend-printa=yes printa
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  paged! '1\n'
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  $ A=2 hg --config pager.attend-printa=yes printa
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  paged! '2\n'
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Pager should not override the exit code of other commands
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  $ cat >> $TESTTMP/fortytwo.py <<'EOF'
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  > from mercurial import cmdutil, commands
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  > cmdtable = {}
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  > command = cmdutil.command(cmdtable)
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  > @command('fortytwo', [], 'fortytwo', norepo=True)
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  > def fortytwo(ui, *opts):
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  >     ui.write('42\n')
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  >     return 42
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  > EOF
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  $ cat >> $HGRCPATH <<'EOF'
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  > [extensions]
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  > fortytwo = $TESTTMP/fortytwo.py
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  > EOF
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  $ hg fortytwo --pager=on
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  paged! '42\n'
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  [42]