revlog: allow reverse iteration with revlog.revs
We often need to perform rev iteration in reverse order. This
changeset makes it possible to do so, in order to avoid costly reverse
or reversed() calls later.
Simple commands:
$ echo foo
foo
$ printf 'oh no'
oh no (no-eol)
$ printf 'bar\nbaz\n' | cat
bar
baz
Multi-line command:
$ foo() {
> echo bar
> }
$ foo
bar
Return codes before inline python:
$ sh -c 'exit 1'
[1]
Doctest commands:
>>> print 'foo'
foo
$ echo interleaved
interleaved
>>> for c in 'xyz':
... print c
x
y
z
>>> print
Regular expressions:
$ echo foobarbaz
foobar.* (re)
$ echo barbazquux
.*quux.* (re)
Globs:
$ printf '* \\foobarbaz {10}\n'
\* \\fo?bar* {10} (glob)
Literal match ending in " (re)":
$ echo 'foo (re)'
foo (re)
Windows: \r\n is handled like \n and can be escaped:
#if windows
$ printf 'crlf\r\ncr\r\tcrlf\r\ncrlf\r\n'
crlf
cr\r (no-eol) (esc)
\tcrlf (esc)
crlf\r (esc)
#endif
Combining esc with other markups - and handling lines ending with \r instead of \n:
$ printf 'foo/bar\r'
foo/bar\r (no-eol) (glob) (esc)
#if windows
$ printf 'foo\\bar\r'
foo/bar\r (no-eol) (glob) (esc)
#endif
$ printf 'foo/bar\rfoo/bar\r'
foo.bar\r \(no-eol\) (re) (esc)
foo.bar\r \(no-eol\) (re)
testing hghave
$ "$TESTDIR/hghave" true
$ "$TESTDIR/hghave" false
skipped: missing feature: nail clipper
[1]
$ "$TESTDIR/hghave" no-true
skipped: system supports yak shaving
[1]
$ "$TESTDIR/hghave" no-false
Conditional sections based on hghave:
#if true
$ echo tested
tested
#else
$ echo skipped
#endif
#if false
$ echo skipped
#else
$ echo tested
tested
#endif
#if no-false
$ echo tested
tested
#else
$ echo skipped
#endif
#if no-true
$ echo skipped
#else
$ echo tested
tested
#endif
Exit code:
$ (exit 1)
[1]