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Partially add back in "support REP (repeat) escape sequence"

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Add the functionality back in for xterm compatibility, but do not expose the
capability in st.info (yet).

Some notes:

It was reverted because it caused some issues with ncurses in some
configurations, namely when using BSD padding (--enable-bsdpad, BSD_TPUTS) in
ncurses it caused issues with repeating digits.

A fix has been upstreamed in ncurses since snapshot 20200523. The fix is also
backported to OpenBSD -current.
This commit is contained in:
Hiltjo Posthuma 2020-05-30 21:34:57 +02:00
parent dec6b530a4
commit 94b8ec0021
2 changed files with 12 additions and 0 deletions
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10
st.c
View File

@ -129,6 +129,7 @@ typedef struct {
int charset; /* current charset */ int charset; /* current charset */
int icharset; /* selected charset for sequence */ int icharset; /* selected charset for sequence */
int *tabs; int *tabs;
Rune lastc; /* last printed char outside of sequence, 0 if control */
} Term; } Term;
/* CSI Escape sequence structs */ /* CSI Escape sequence structs */
@ -1648,6 +1649,12 @@ csihandle(void)
if (csiescseq.arg[0] == 0) if (csiescseq.arg[0] == 0)
ttywrite(vtiden, strlen(vtiden), 0); ttywrite(vtiden, strlen(vtiden), 0);
break; break;
case 'b': /* REP -- if last char is printable print it <n> more times */
DEFAULT(csiescseq.arg[0], 1);
if (term.lastc)
while (csiescseq.arg[0]-- > 0)
tputc(term.lastc);
break;
case 'C': /* CUF -- Cursor <n> Forward */ case 'C': /* CUF -- Cursor <n> Forward */
case 'a': /* HPR -- Cursor <n> Forward */ case 'a': /* HPR -- Cursor <n> Forward */
DEFAULT(csiescseq.arg[0], 1); DEFAULT(csiescseq.arg[0], 1);
@ -2373,6 +2380,8 @@ check_control_code:
/* /*
* control codes are not shown ever * control codes are not shown ever
*/ */
if (!term.esc)
term.lastc = 0;
return; return;
} else if (term.esc & ESC_START) { } else if (term.esc & ESC_START) {
if (term.esc & ESC_CSI) { if (term.esc & ESC_CSI) {
@ -2422,6 +2431,7 @@ check_control_code:
} }
tsetchar(u, &term.c.attr, term.c.x, term.c.y); tsetchar(u, &term.c.attr, term.c.x, term.c.y);
term.lastc = u;
if (width == 2) { if (width == 2) {
gp->mode |= ATTR_WIDE; gp->mode |= ATTR_WIDE;

2
st.info
View File

@ -184,6 +184,8 @@ st-mono| simpleterm monocolor,
# XTerm extensions # XTerm extensions
rmxx=\E[29m, rmxx=\E[29m,
smxx=\E[9m, smxx=\E[9m,
# disabled rep for now: causes some issues with older ncurses versions.
# rep=%p1%c\E[%p2%{1}%-%db,
# tmux extensions, see TERMINFO EXTENSIONS in tmux(1) # tmux extensions, see TERMINFO EXTENSIONS in tmux(1)
Tc, Tc,
Ms=\E]52;%p1%s;%p2%s\007, Ms=\E]52;%p1%s;%p2%s\007,