commit 7ceb3d1f72eabfa678e5cfae176c57630ad98c43
from: Avi Halachmi (:avih) <avihpit@yahoo.com>
via: Hiltjo Posthuma <hiltjo@codemadness.org>
date: Sun Nov 10 21:45:54 2019 UTC

STREscape: don't trim prematurely

STRescape holds strings in escape sequences such as OSC and DCS, and
its buffer is 512 bytes.

If the input is too big then trailing chars are ignored, but the test
was off-by-1 such that it took 510 chars instead of 511 (before a
terminating NULL is added).

Now the full size can be utilized.

commit - ea4d933ed9d8ce16699c84892a29e070c70b2eb9
commit + 7ceb3d1f72eabfa678e5cfae176c57630ad98c43
blob - a8f8232e3539f31cc39e599ebabd2f144058e6c1
blob + 50226d1677b230d290d9e802742e85f27dc1d4b4
--- st.c
+++ st.c
@@ -2330,7 +2330,7 @@ tputc(Rune u)
 		if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
 			term.mode |= MODE_SIXEL;
 
-		if (strescseq.len+len >= sizeof(strescseq.buf)-1) {
+		if (strescseq.len+len >= sizeof(strescseq.buf)) {
 			/*
 			 * Here is a bug in terminals. If the user never sends
 			 * some code to stop the str or esc command, then st