templates: add filter to reverse list
The filter supports only lists because for lists, it’s straightforward to
implement. Reversing text doesn’t seem very useful and is hard to implement.
Reversing the bytes would break multi-bytes encodings. Reversing the code
points would break characters consisting of multiple code points. Reversing
graphemes is non-trivial without using a library not included in the standard
library.
#require test-repo pyflakes hg10
$ . "$TESTDIR/helpers-testrepo.sh"
run pyflakes on all tracked files ending in .py or without a file ending
(skipping binary file random-seed)
$ cat > test.py <<EOF
> print(undefinedname)
> EOF
$ "$PYTHON" -m pyflakes test.py 2>/dev/null | "$TESTDIR/filterpyflakes.py"
test.py:1:* undefined name 'undefinedname' (glob)
$ cd "`dirname "$TESTDIR"`"
$ testrepohg locate 'set:**.py or grep("^#!.*python")' \
> -X hgext/fsmonitor/pywatchman \
> -X contrib/python-zstandard \
> -X mercurial/thirdparty \
> 2>/dev/null \
> | xargs "$PYTHON" -m pyflakes 2>/dev/null | "$TESTDIR/filterpyflakes.py"
contrib/perf.py:*:* undefined name 'xrange' (glob) (?)
mercurial/pycompat.py:*:* 'codecs' imported but unused (glob)
mercurial/pycompat.py:*:* 'concurrent.futures' imported but unused (glob)
mercurial/pycompat.py:*:* 'http.client as httplib' imported but unused (glob)
mercurial/pycompat.py:*:* 'http.cookiejar as cookielib' imported but unused (glob)
mercurial/pycompat.py:*:* 'io' imported but unused (glob)
mercurial/pycompat.py:*:* 'queue' imported but unused (glob)
mercurial/pycompat.py:*:* 'socketserver' imported but unused (glob)
mercurial/pycompat.py:*:* 'xmlrpc.client as xmlrpclib' imported but unused (glob)
mercurial/util.py:*:* 'pickle' imported but unused (glob)