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patch 8.2.3597: Vim seems to hang when writing a long text to a terminal

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Problem:    Vim seems to hang when writing a very long text to a terminal
            window.
Solution:   Limit the amount of text based on 'termwinscroll'. (issue #9080)
This commit is contained in:
Bram Moolenaar
2021-11-15 17:13:11 +00:00
parent 733b124a90
commit 36968af155
3 changed files with 20 additions and 1 deletions
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16
src/terminal.c
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@@ -1130,10 +1130,24 @@ get_tty_part(term_T *term UNUSED)
* Write job output "msg[len]" to the vterm.
*/
static void
term_write_job_output(term_T *term, char_u *msg, size_t len)
term_write_job_output(term_T *term, char_u *msg_arg, size_t len_arg)
{
char_u *msg = msg_arg;
size_t len = len_arg;
VTerm *vterm = term->tl_vterm;
size_t prevlen = vterm_output_get_buffer_current(vterm);
size_t limit = term->tl_buffer->b_p_twsl * term->tl_cols * 3;
// Limit the length to 'termwinscroll' * cols * 3 bytes. Keep the text at
// the end.
if (len > limit)
{
char_u *p = msg + len - limit;
p -= (*mb_head_off)(msg, p);
len -= p - msg;
msg = p;
}
vterm_input_write(vterm, (char *)msg, len);