comparison hgext/color.py @ 24068:4e02418b4236

color: support a different color mode when the pager is active

MSYS on Windows has a terminal that supports the "win32" color mode
(which "auto" properly detects for us). However, a popularily configured
pager in that environment (GNU less) only supports the "ansi" color
mode.

This patch teaches color about a new config option: pagermode. It
behaves like "mode" but is only consulted when the pager is active for
the current command. MSYS users can now set "pagermode = ansi" and get a
colorful experience that just works. Previously, MSYS users would have
to live without color when using GNU less as the pager, would have to
manually configure the pager to attend every command, or would have
gibberish if "ansi" was used without the pager.

24067:0baf41e02a4d

will only display ECMA-48 color codes, and terminfo mode may sometimes
emit codes that less doesn't understand. You can work around this by
either using ansi mode (or auto mode), or by using less -r (which will
pass through all terminal control codes, not just color control
codes).
'''

import os

from mercurial import cmdutil, commands, dispatch, extensions, subrepo, util

        return None

    formatted = always or (os.environ.get('TERM') != 'dumb' and ui.formatted())

    mode = ui.config('color', 'mode', 'auto')
    realmode = mode
    if mode == 'auto':
        if os.name == 'nt':
            term = os.environ.get('TERM')
            # TERM won't be defined in a vanilla cmd.exe environment.

24068:4e02418b4236

will only display ECMA-48 color codes, and terminfo mode may sometimes
emit codes that less doesn't understand. You can work around this by
either using ansi mode (or auto mode), or by using less -r (which will
pass through all terminal control codes, not just color control
codes).

On some systems (such as MSYS in Windows), the terminal may support
a different color mode than the pager (activated via the "pager"
extension). It is possible to define separate modes depending on whether
the pager is active::

  [color]
  mode = auto
  pagermode = ansi

If ``pagermode`` is not defined, the ``mode`` will be used.
'''

import os

from mercurial import cmdutil, commands, dispatch, extensions, subrepo, util

        return None

    formatted = always or (os.environ.get('TERM') != 'dumb' and ui.formatted())

    mode = ui.config('color', 'mode', 'auto')

    # If pager is active, color.pagermode overrides color.mode.
    if getattr(ui, 'pageractive', False):
        mode = ui.config('color', 'pagermode', mode)

    realmode = mode
    if mode == 'auto':
        if os.name == 'nt':
            term = os.environ.get('TERM')
            # TERM won't be defined in a vanilla cmd.exe environment.