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Emit CSI-u control sequences to (mostly) disable its use while running. #97

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Emit CSI-u control sequences to (mostly) disable its use while running. #97

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16 changes: 16 additions & 0 deletions joe/scrn.c
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,10 @@ int opt_usetabs = 0;
int assume_color = 0;
int assume_256color = 0;

/* see https://sw.kovidgoyal.net/kitty/keyboard-protocol/ */
#define CSI_U_ENTRY "\033[>0u"
#define CSI_U_EXIT "\033[<u"

/* How to display characters (especially the control ones) */
/* here are characters ... */
static const char xlatc[256] = {
Expand Down Expand Up @@ -921,6 +925,9 @@ SCRN *nopen(CAP *cap)
texec(t->cap, t->cl, 1, 0, 0, 0, 0);
if (t->brp)
texec(t->cap, t->brp, 1, 0, 0, 0, 0);
/* disable (most) CSI-u on terminals which support it */
ttputs(CSI_U_ENTRY);
ttflsh();

/* Initialize variable screen size dependent vars */
t->scrn = NULL;
Expand Down Expand Up @@ -1873,6 +1880,9 @@ void nescape(SCRN *t)
eraeol(t, 0, t->li - 1, 0);
if (t->bre)
texec(t->cap, t->bre, 1, 0, 0, 0, 0);
/* restore previous CSI-u setting on terminals which support it */
ttputs(CSI_U_EXIT);
ttflsh();
if (t->te)
texec(t->cap, t->te, 1, 0, 0, 0, 0);
}
Expand All @@ -1882,6 +1892,9 @@ void nreturn(SCRN *t)
mouseopen();
if (t->ti)
texec(t->cap, t->ti, 1, 0, 0, 0, 0);
/* disable (most) CSI-u on terminals which support it */
ttputs(CSI_U_ENTRY);
ttflsh();
if (!skiptop && t->cl)
texec(t->cap, t->cl, 1, 0, 0, 0, 0);
if (t->brp)
Expand All @@ -1899,6 +1912,9 @@ void nclose(SCRN *t)
cpos(t, 0, t->li - 1);
if (t->bre)
texec(t->cap, t->bre, 1, 0, 0, 0, 0);
/* restore previous CSI-u setting on terminals which support it */
ttputs(CSI_U_EXIT);
ttflsh();
if (t->te)
texec(t->cap, t->te, 1, 0, 0, 0, 0);
ttclose();
Expand Down
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