view tests/test-ui-color.py @ 18796:fa6d5c62f3bd

pathcomplete: complete directories more conservatively

Suppose we want to perform a single-level completion (i.e. without
--full) of "fi" in a repo containing "fee", "fie/dead", "fie/live",
and "foe".

If we give back "fie/" as the only answer, the shell will consider
the completion to be unambiguous, and will append a space after the
completion.  We can't complete "fie/live" or "fie/dead" without
first backspacing over that space.

We used to thus create two fake names, "fie/a" and "fie/b", to force
the shell to consider the completion to be ambiguous. It would then
stop at "fie/" without appending a space, allowing us to hit tab
again to complete "fie/live" or "fie/dead".

The change here arises from realising that we only need to force
the shell to consider a completion as ambiguous if we have exactly
one directory and zero files as possible completions.

This prevents spurious names from showing up as possible completions
when they don't need to be invented in the first place.

import os, sys
from hgext import color
from mercurial import dispatch, ui

# ensure errors aren't buffered
testui = color.colorui()
testui.pushbuffer()
testui.write(('buffered\n'))
testui.warn(('warning\n'))
testui.write_err('error\n')
print repr(testui.popbuffer())

# test dispatch.dispatch with the same ui object
hgrc = open(os.environ["HGRCPATH"], 'w')
hgrc.write('[extensions]\n')
hgrc.write('color=\n')
hgrc.close()

ui_ = ui.ui()
ui_.setconfig('ui', 'formatted', 'True')

# we're not interested in the output, so write that to devnull
ui_.fout = open(os.devnull, 'w')

# call some arbitrary command just so we go through
# color's wrapped _runcommand twice.
def runcmd():
    dispatch.dispatch(dispatch.request(['version', '-q'], ui_))

runcmd()
print "colored? " + str(issubclass(ui_.__class__, color.colorui))
runcmd()
print "colored? " + str(issubclass(ui_.__class__, color.colorui))