comparison hgext/histedit.py @ 46395:a936e570288d

histedit: notice when the main window underflows height and abort

If you try to have a 13-line-tall terminal and use curses histedit, it
fails by spinning in an infinite loop due to the catch-all ignore of
curses errors on line 1682 of histedit.py. We should also fix that
catch-all ignore of curses errors (what other demons lurk here, I
wonder?) but we can trivially catch this case and guide the user to a
happy path. We've seen this mostly in IDE users that have a tendency
to have really tiny embedded terminal windows.

Differential Revision: https://phab.mercurial-scm.org/D9854

46394:8477c91b5e8e

        renderstring(win, state, content[start:], diffcolors=True)

    def layout(mode):
        maxy, maxx = stdscr.getmaxyx()
        helplen = len(helplines(mode))
        return {
            b'commit': (12, maxx),
            b'help': (helplen, maxx),
            b'main': (maxy - helplen - 12, maxx),
        }

    def drawvertwin(size, y, x):
        win = curses.newwin(size[0], size[1], y, x)
        y += size[0]

46395:a936e570288d

        renderstring(win, state, content[start:], diffcolors=True)

    def layout(mode):
        maxy, maxx = stdscr.getmaxyx()
        helplen = len(helplines(mode))
        mainlen = maxy - helplen - 12
        if mainlen < 1:
            raise error.Abort(
                _(b"terminal dimensions %d by %d too small for curses histedit")
                % (maxy, maxx),
                hint=_(
                    b"enlarge your terminal or use --config ui.interface=text"
                ),
            )
        return {
            b'commit': (12, maxx),
            b'help': (helplen, maxx),
            b'main': (mainlen, maxx),
        }

    def drawvertwin(size, y, x):
        win = curses.newwin(size[0], size[1], y, x)
        y += size[0]