tsupport REP (repeat) escape sequence - st - [fork] customized build of st, the… | |
git clone git://src.adamsgaard.dk/st | |
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--- | |
commit e8392b282c2eaa28725241a9612804fb55113da4 | |
parent f8afebdfa0cc9a57b22c39c47e9b585f69453eb7 | |
Author: Avi Halachmi (:avih) <[email protected]> | |
Date: Thu, 14 May 2020 18:18:07 +0300 | |
support REP (repeat) escape sequence | |
The sequence \e[Nb prints the last printed char N (more) times if it's | |
printable, and it's ignored after newline or other control chars. | |
This is Ecma-048/ANSI-X3.6 sequence and not DEC VT. It's supported by | |
xterm, and ncurses uses it when possible, e.g. when TERM is xterm* (and | |
with this commit also st*). | |
xterm supports only codepoints<=255, possibly due to internal limits. | |
We support any value/codepoint which was placed in a cell. | |
To test: | |
- tput rep 65 4 -> prints 'AAAA' | |
- printf "\342\225\246\033[4b" -> prints U+2566 1+4 times. | |
Diffstat: | |
M st.c | 10 ++++++++++ | |
M st.info | 1 + | |
2 files changed, 11 insertions(+), 0 deletions(-) | |
--- | |
diff --git a/st.c b/st.c | |
t@@ -129,6 +129,7 @@ typedef struct { | |
int charset; /* current charset */ | |
int icharset; /* selected charset for sequence */ | |
int *tabs; | |
+ Rune lastc; /* last printed char outside of sequence, 0 if control */ | |
} Term; | |
/* CSI Escape sequence structs */ | |
t@@ -1648,6 +1649,12 @@ csihandle(void) | |
if (csiescseq.arg[0] == 0) | |
ttywrite(vtiden, strlen(vtiden), 0); | |
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 'a': /* HPR -- Cursor <n> Forward */ | |
DEFAULT(csiescseq.arg[0], 1); | |
t@@ -2373,6 +2380,8 @@ check_control_code: | |
/* | |
* control codes are not shown ever | |
*/ | |
+ if (!term.esc) | |
+ term.lastc = 0; | |
return; | |
} else if (term.esc & ESC_START) { | |
if (term.esc & ESC_CSI) { | |
t@@ -2422,6 +2431,7 @@ check_control_code: | |
} | |
tsetchar(u, &term.c.attr, term.c.x, term.c.y); | |
+ term.lastc = u; | |
if (width == 2) { | |
gp->mode |= ATTR_WIDE; | |
diff --git a/st.info b/st.info | |
t@@ -184,6 +184,7 @@ st-mono| simpleterm monocolor, | |
# XTerm extensions | |
rmxx=\E[29m, | |
smxx=\E[9m, | |
+ rep=%p1%c\E[%p2%{1}%-%db, | |
# tmux extensions, see TERMINFO EXTENSIONS in tmux(1) | |
Tc, | |
Ms=\E]52;%p1%s;%p2%s\007, |