templatefilters: fix crash by string formatting of '{x|splitlines}'
Before, it crashed because mapping['templ'] was missing. As it didn't support
the legacy list template from the beginning, we can simply use hybridlist().
$ cat >> fakepager.py <<EOF
> import sys
> for line in sys.stdin:
> sys.stdout.write('paged! %r\n' % line)
> EOF
Enable ui.formatted because pager won't fire without it, and set up
pager and tell it to use our fake pager that lets us see when the
pager was running.
$ cat >> $HGRCPATH <<EOF
> [ui]
> formatted = yes
> color = no
> [pager]
> pager = python $TESTTMP/fakepager.py
> EOF
$ hg init repo
$ cd repo
$ echo a >> a
$ hg add a
$ hg ci -m 'add a'
$ for x in `python $TESTDIR/seq.py 1 10`; do
> echo a $x >> a
> hg ci -m "modify a $x"
> done
By default diff and log are paged, but id is not:
$ hg diff -c 2 --pager=yes
paged! 'diff -r f4be7687d414 -r bce265549556 a\n'
paged! '--- a/a\tThu Jan 01 00:00:00 1970 +0000\n'
paged! '+++ b/a\tThu Jan 01 00:00:00 1970 +0000\n'
paged! '@@ -1,2 +1,3 @@\n'
paged! ' a\n'
paged! ' a 1\n'
paged! '+a 2\n'
$ hg log --limit 2
paged! 'changeset: 10:46106edeeb38\n'
paged! 'tag: tip\n'
paged! 'user: test\n'
paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n'
paged! 'summary: modify a 10\n'
paged! '\n'
paged! 'changeset: 9:6dd8ea7dd621\n'
paged! 'user: test\n'
paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n'
paged! 'summary: modify a 9\n'
paged! '\n'
$ hg id
46106edeeb38 tip
We can enable the pager on id:
BROKEN: should be paged
$ hg --config pager.attend-id=yes id
46106edeeb38 tip
Setting attend-$COMMAND to a false value works, even with pager in
core:
$ hg --config pager.attend-diff=no diff -c 2
diff -r f4be7687d414 -r bce265549556 a
--- a/a Thu Jan 01 00:00:00 1970 +0000
+++ b/a Thu Jan 01 00:00:00 1970 +0000
@@ -1,2 +1,3 @@
a
a 1
+a 2
If 'log' is in attend, then 'history' should also be paged:
$ hg history --limit 2 --config pager.attend=log
paged! 'changeset: 10:46106edeeb38\n'
paged! 'tag: tip\n'
paged! 'user: test\n'
paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n'
paged! 'summary: modify a 10\n'
paged! '\n'
paged! 'changeset: 9:6dd8ea7dd621\n'
paged! 'user: test\n'
paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n'
paged! 'summary: modify a 9\n'
paged! '\n'
Pager should not start if stdout is not a tty.
$ hg log -l1 -q --config ui.formatted=False
10:46106edeeb38
Pager should be disabled if pager.pager is empty (otherwise the output would
be silently lost.)
$ hg log -l1 -q --config pager.pager=
10:46106edeeb38
Pager with color enabled allows colors to come through by default,
even though stdout is no longer a tty.
$ cat >> $HGRCPATH <<EOF
> [ui]
> color = yes
> [color]
> mode = ansi
> EOF
$ hg log --limit 3
paged! '\x1b[0;33mchangeset: 10:46106edeeb38\x1b[0m\n'
paged! 'tag: tip\n'
paged! 'user: test\n'
paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n'
paged! 'summary: modify a 10\n'
paged! '\n'
paged! '\x1b[0;33mchangeset: 9:6dd8ea7dd621\x1b[0m\n'
paged! 'user: test\n'
paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n'
paged! 'summary: modify a 9\n'
paged! '\n'
paged! '\x1b[0;33mchangeset: 8:cff05a6312fe\x1b[0m\n'
paged! 'user: test\n'
paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n'
paged! 'summary: modify a 8\n'
paged! '\n'
An invalid pager command name is reported sensibly if we don't have to
use shell=True in the subprocess call:
$ hg log --limit 3 --config pager.pager=this-command-better-never-exist
missing pager command 'this-command-better-never-exist', skipping pager
\x1b[0;33mchangeset: 10:46106edeeb38\x1b[0m (esc)
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: modify a 10
\x1b[0;33mchangeset: 9:6dd8ea7dd621\x1b[0m (esc)
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: modify a 9
\x1b[0;33mchangeset: 8:cff05a6312fe\x1b[0m (esc)
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: modify a 8
A complicated pager command gets worse behavior. Bonus points if you can
improve this.
$ hg log --limit 3 \
> --config pager.pager='this-command-better-never-exist --seriously' \
> 2>/dev/null || true
Pager works with shell aliases.
$ cat >> $HGRCPATH <<EOF
> [alias]
> echoa = !echo a
> EOF
$ hg echoa
a
BROKEN: should be paged
$ hg --config pager.attend-echoa=yes echoa
a
Pager works with hg aliases including environment variables.
$ cat >> $HGRCPATH <<'EOF'
> [alias]
> printa = log -T "$A\n" -r 0
> EOF
$ A=1 hg --config pager.attend-printa=yes printa
paged! '1\n'
$ A=2 hg --config pager.attend-printa=yes printa
paged! '2\n'
Something that's explicitly attended is still not paginated if the
pager is globally set to off using a flag:
$ A=2 hg --config pager.attend-printa=yes printa --pager=no
2
Pager should not override the exit code of other commands
$ cat >> $TESTTMP/fortytwo.py <<'EOF'
> from mercurial import cmdutil, commands
> cmdtable = {}
> command = cmdutil.command(cmdtable)
> @command('fortytwo', [], 'fortytwo', norepo=True)
> def fortytwo(ui, *opts):
> ui.write('42\n')
> return 42
> EOF
$ cat >> $HGRCPATH <<'EOF'
> [extensions]
> fortytwo = $TESTTMP/fortytwo.py
> EOF
$ hg fortytwo --pager=on
paged! '42\n'
[42]
A command that asks for paging using ui.pager() directly works:
$ hg blame a
paged! ' 0: a\n'
paged! ' 1: a 1\n'
paged! ' 2: a 2\n'
paged! ' 3: a 3\n'
paged! ' 4: a 4\n'
paged! ' 5: a 5\n'
paged! ' 6: a 6\n'
paged! ' 7: a 7\n'
paged! ' 8: a 8\n'
paged! ' 9: a 9\n'
paged! '10: a 10\n'
but not with HGPLAIN
$ HGPLAIN=1 hg blame a
0: a
1: a 1
2: a 2
3: a 3
4: a 4
5: a 5
6: a 6
7: a 7
8: a 8
9: a 9
10: a 10
explicit flags work too:
$ hg blame --pager=no a
0: a
1: a 1
2: a 2
3: a 3
4: a 4
5: a 5
6: a 6
7: a 7
8: a 8
9: a 9
10: a 10
Put annotate in the ignore list for pager:
$ cat >> $HGRCPATH <<EOF
> [pager]
> ignore = annotate
> EOF
$ hg blame a
0: a
1: a 1
2: a 2
3: a 3
4: a 4
5: a 5
6: a 6
7: a 7
8: a 8
9: a 9
10: a 10
Environment variables like LESS and LV are set automatically:
$ cat > $TESTTMP/printlesslv.py <<EOF
> import os, sys
> sys.stdin.read()
> for name in ['LESS', 'LV']:
> sys.stdout.write(('%s=%s\n') % (name, os.environ.get(name, '-')))
> sys.stdout.flush()
> EOF
$ cat >> $HGRCPATH <<EOF
> [alias]
> noop = log -r 0 -T ''
> [ui]
> formatted=1
> [pager]
> pager = $PYTHON $TESTTMP/printlesslv.py
> EOF
$ unset LESS
$ unset LV
$ hg noop --pager=on
LESS=FRX
LV=-c
$ LESS=EFGH hg noop --pager=on
LESS=EFGH
LV=-c