tests/test-check-help.t

fileset: add revs(revs, fileset) to evaluate set in working directory

Unlike other functions, "revs()" does not select files but switches the
evaluation context. This allow to match file with property in another revision
that the one currently evaluated.

This changeset is based on work from Yuya Nishihara.

#require test-repo

  $ . "$TESTDIR/helpers-testrepo.sh"

  $ cat <<'EOF' > scanhelptopics.py
  > from __future__ import absolute_import, print_function
  > import re
  > import sys
  > topics = set()
  > topicre = re.compile(r':hg:`help ([a-z0-9\-.]+)`')
  > for fname in sys.argv:
  >     with open(fname) as f:
  >         topics.update(m.group(1) for m in topicre.finditer(f.read()))
  > for s in sorted(topics):
  >     print(s)
  > EOF

  $ cd "$TESTDIR"/..

Check if ":hg:`help TOPIC`" is valid:
(use "xargs -n1 -t" to see which help commands are executed)

  $ hg files 'glob:{hgext,mercurial}/**/*.py' \
  > | xargs python "$TESTTMP/scanhelptopics.py" \
  > | xargs -n1 hg help > /dev/null