Revert "support REP (repeat) escape sequence"

This reverts commit e8392b282c2eaa28725241a9612804fb55113da4.

There is currently a bug in older ncurses versions (like on OpenBSD) where a
fix for a bug with REP is not backported yet. Most likely in tty/tty_update.c:

Noticed while using lynx (which uses ncurses/curses).
To reproduce using lynx: echo "Z0000000" | lynx -stdin

or using the program:

int
main(void)
{
	WINDOW *win;
	win = initscr();

	printw("Z0000000");

	refresh();

	sleep(5);

	return 0;
}

This prints "ZZZZZZZ" (incorrectly).

2 files changed, 0 insertions, 11 deletions

diff --git a/st.c b/st.c
index 54af098..0d35613 100644
--- a/st.c
+++ b/st.c
@@ -129,7 +129,6 @@ 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 */
@@ -1649,12 +1648,6 @@ 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);
@@ -2380,8 +2373,6 @@ 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) {
@@ -2431,7 +2422,6 @@ 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
index e5393db..d0694e2 100644
--- a/st.info
+++ b/st.info
@@ -184,7 +184,6 @@ 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,