On Sat, Jan 31, 2026 at 06:09:52PM -0500, Thomas Dickey wrote: > On Sat, Jan 31, 2026 at 10:06:01AM -0800, Jared Finder wrote: > > On 2026-01-30 14:24, Thomas Dickey wrote: > > > On Fri, Jan 30, 2026 at 05:46:57PM +0000, Robin Haberkorn via Bug > > > reports for ncurses, the GNU implementation of curses wrote: > > > > btw. Some terminals nowadays have squiggles and strike-through > > > > as well. I always wondered why this didn't make it right through > > > > to ncurses. > > > > > > a few do, but look at the allocated bits (adding stuff would be an ABI > > > change) > > > > If controlling the underline style and color was widely desired, couldn't > > the extra parameter to color_set be used? That would also require the curses > > library to maintain extra state of the current underline style and color for > > attron to look at and emit the correct escape sequence. > > It's a little late for that (several years, in fact).
ncurses 6.1, early 2018
> See the manpage section on extensions, which makes that a pointer to 'int',
> for getting extended color pairs (past 32767).
I considered making a struct, decided that (since there were no other
plausible extensions to account for), that the color pair was enough
for this ABI.
That "would also require" skims over a lot of work -- if you'll read through
the history of this stuff, you might notice that the developers who make
these features up are unwilling to do any part of that.
> (changing that would be an ABI change...)
...however, the "allocated bits" would have to come from the attr_t type,
e.g., as used here:
typedef struct
{
attr_t attr;
wchar_t chars[CCHARW_MAX];
int ext_color;
}
cchar_t;
or (if we're not limited to wide-characters...) the same data in chtype:
int addch (const chtype);
as noted, chtype can't store color pairs with more bits.
--
Thomas E. Dickey <[email protected]>
https://invisible-island.net
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