[GRASS5] v.digit menu entry print problem

[Glynn Clements]

Markus Neteler wrote:

> a small problem was reported with v.digit:
> If you hit "Q" to quit the module, the message
> 
> "Leave digit [n]"
> does not appear on some systems.
> 
> I think it is a bug with curses_yes_no_default:
> src/mapdev/v.digit
> menus.c:            if (curses_yes_no_default (2, "Leave digit? ", 0))
> 
> similar to the stdout/fflush thing. However, I am not sure
> how to force such a fflush there.
> 
> The curses_yes_no_default() is written in dig_curses.c using Write_info()
> also there. 

I don't think that this is an fflush issue.

Write_info() calls _Write_info() followed by wrefresh(INFO_WIN). If
wrefresh() doesn't result in the text being displayed, then it appears
that curses is broken.

In any case, the call to Write_info() in curses_yes_no_default() is
immediately followed by a call to Get_curses_text(), which in turn
calls wgetch(). Reading from any stream which is associated with a
terminal is supposed to flush any output streams. If this doesn't
happen, then the C library is broken.

-- 
Glynn Clements <glynn.clements at virgin.net>

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