On Tue, 13 Feb 2018 07:58:50 -0500, Matt Harbison wrote:
>
> > On Feb 13, 2018, at 6:27 AM, Yuya Nishihara <y...@tcha.org> wrote:
> >
> >> On Mon, 12 Feb 2018 22:17:35 -0500, Matt Harbison wrote:
> >> # HG changeset patch
> >> # User Matt Harbison <matt_harbi...@yahoo.com>
> >> # Date 1518488713 18000
> >> # Mon Feb 12 21:25:13 2018 -0500
> >> # Node ID e99e6917138593d2dddf7e0f5506dbd3f6c87743
> >> # Parent 9b5df6e19a4f308e14703a8136cd0530c1e1d1a9
> >> minifileset: allow 'path:' patterns to have an explicit trailing slash
> >>
> >> We allow for it on the command line, with `hg status`, for example. I
> >> thought
> >> that I copied this "n.startswith(p) and (len(n) == pl or n[pl] == '/')"
> >> pattern
> >> from somewhere, but I don't see it now.
> >>
> >> diff --git a/mercurial/minifileset.py b/mercurial/minifileset.py
> >> --- a/mercurial/minifileset.py
> >> +++ b/mercurial/minifileset.py
> >> @@ -26,7 +26,7 @@
> >> raise error.ParseError(_('reserved character: %s') % c)
> >> return lambda n, s: n.endswith(ext)
> >> elif name.startswith('path:'): # directory or full path test
> >> - p = name[5:] # prefix
> >> + p = name[5:] if name[-1] != '/' else name[5:-1] # prefix
> >
> > Doesn't it mean 'a/' matches 'a'?
>
> Yes. (But 'a' won’t match 'ab'.)
Ugh, I never thought 'path:hg/' would match the file 'hg', but it does
probably because of util.normpath().
% hg debugwalk 'path:hg/'
matcher: <patternmatcher patterns='(?:hg(?:/|$))'>
f hg hg exact
Perhaps applying normpath() would look saner than testing if name[-1] == '/'.
> Basically, I spent some time last week writing ignore rules for some
> converted repos, and got into the habit of appending a trailing '/' to ensure
> the match is a directory, and not just a substring. When I did that here, it
> took awhile to figure out why the path was being ignored. ('path:' only
> matches directories)
>
> > Can't we reuse some parts of the match module to build a function or regexp
> > from a pattern string?
>
> Probably. I’ve seen a couple cases where a regex pattern would be useful. I
> just assumed those other match types were part of the performance concern
> that was the reason for splitting out the mini language in the first place.
(CC Jun)
I think the O(n) concern came from how fileset filters n-length list, not
from the matcher function itself.
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