Reading the source code, i see that tdefcolor contains the following
case to handle 24-bit color codes. [1]
case 2: /* direct color in RGB space */
[ ... ]
idx = TRUECOLOR(r, g, b);
break;
The TRUECOLOR macro returns an integer with r, g, and b in bits 0-23,
and bit 24 set. [2]
#define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b)).
tdefcolor is called by tsetattr, which assigns the result to term.c.attr.fg. [3]
case 38:
if ((idx = tdefcolor(attr, &i, l)) >= 0)
term.c.attr.fg = idx;
break;
But fg is defined as a ushort. [4]
typedef struct {
Rune u; /* character code */
ushort mode; /* attribute flags */
ushort fg; /* foreground */
ushort bg; /* background */
} Glyph;
Since a ushort can only hold 16 bits, I don't see how this can possibly work.
[1]:
http://git.suckless.org/st/tree/st.c?id=caa97cc781ccf29f28c3d9e6683a66eb3f70e2bd#n1762
[2]:
http://git.suckless.org/st/tree/st.c?id=caa97cc781ccf29f28c3d9e6683a66eb3f70e2bd#n1872
[3]:
http://git.suckless.org/st/tree/st.c?id=caa97cc781ccf29f28c3d9e6683a66eb3f70e2bd#n81
[4]:
http://git.suckless.org/st/tree/st.c?id=caa97cc781ccf29f28c3d9e6683a66eb3f70e2bd#n191
Andrew Ekstedt
