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Re: atf for libcurses
On Fri, Nov 05, 2010 at 10:21:55AM +1030, Brett Lymn wrote:
> So, it enters standout, outputs a control-c and then exits standout.
> Why it does this I don't know, I have not dug into the curses code yet
> to find out what it thinks it is doing here. It may be a quirk for
> some ancient terminal but it may be a bug.
I feel a bit vindicated now. This is actually a bug in curses wgetch.
What it is doing is passing the keycode symbol to addch() to add it to
the screen. For my test I put getch() into keypad mode and fed it the
escape sequence for the up arrow - getc() correctly returns the
keycode 0x103 (KEY_UP) what it also does is cast that keycode to a
chtype and called addch() as part of getch(). The chtype is a 16 bit
value, the upper 8 bits are the character attributes and the lower 8
are the character, 0x01 happens to be standout mode and 0x03 is ^C
hence the puzzling output. This bug would have resulted in stray
standout characters being printed on the screen if certain function
keys were pressed in getch().
I have committed a fix for this.
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