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