Collect sequences of printable ASCII characters and process them

together instead of handling them one by one. This is significantly
faster. Sequences are terminated when we reach the end of the line, fill
the internal buffer, or a different character is seen by the input
parser (an escape sequence, or UTF-8).

Rather than writing collected sequences out immediately, hold them until
it is necessary (another screen modification, or we consume all
available data). This means we can discard changes that would have no
effect (for example, lines that would just be scrolled off the screen or
cleared). This reduces the total amount of data we write out to the
terminal - not important for fast terminals, but a big help with slow
(like xterm).

1 files changed, 9 insertions, 0 deletions

diff --git a/tty.c b/tty.c
index 1b7fb55f..508e4bac 100644
--- a/tty.c
+++ b/tty.c
@@ -1170,6 +1170,15 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
 }
 
 void
+tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
+{
+	tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
+
+	tty_attributes(tty, ctx->cell, ctx->wp);
+	tty_putn(tty, ctx->ptr, ctx->num, ctx->num);
+}
+
+void
 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
 {
 	char	*buf;