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	tlbuf: optimize performing many single line changes - neatvi - [fork] simple vi…
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	---
	commit cb01fab3ac9abd167109a9d1a6ac1211aaeaf873
	parent 1f5e321f1f46b3e29f0b99015c2dd76a4b790e9b
	Author: Ali Gholami Rudi <[email protected]>
	Date: Wed, 15 Sep 2021 18:26:04 +0430

	lbuf: optimize performing many single line changes

	Reported by Kyryl Melekhin <[email protected]>.

	Diffstat:
	M lbuf.c \| 14 ++++++++------

	1 file changed, 8 insertions(+), 6 deletions(-)
	---
	diff --git a/lbuf.c b/lbuf.c
	t@@ -136,7 +136,7 @@ static void lbuf_replace(struct lbuf lb, char s, int pos…
	int n_ins = linecount(s);
	int i;
	while (lb->ln_n + n_ins - n_del >= lb->ln_sz) {
	- int nsz = lb->ln_sz + 512;
	+ int nsz = lb->ln_sz + (lb->ln_sz ? lb->ln_sz : 512);
	char *nln = malloc(nsz sizeof(nln[0]));
	char nln_glob = malloc(nsz sizeof(nln_glob[0]));
	memcpy(nln, lb->ln, lb->ln_n * sizeof(lb->ln[0]));
	t@@ -149,10 +149,12 @@ static void lbuf_replace(struct lbuf lb, char s, int p…
	}
	for (i = 0; i < n_del; i++)
	free(lb->ln[pos + i]);
	- memmove(lb->ln + pos + n_ins, lb->ln + pos + n_del,
	- (lb->ln_n - pos - n_del) * sizeof(lb->ln[0]));
	- memmove(lb->ln_glob + pos + n_ins, lb->ln_glob + pos + n_del,
	- (lb->ln_n - pos - n_del) * sizeof(lb->ln_glob[0]));
	+ if (n_ins != n_del) {
	+ memmove(lb->ln + pos + n_ins, lb->ln + pos + n_del,
	+ (lb->ln_n - pos - n_del) * sizeof(lb->ln[0]));
	+ memmove(lb->ln_glob + pos + n_ins, lb->ln_glob + pos + n_del,
	+ (lb->ln_n - pos - n_del) * sizeof(lb->ln_glob[0]));
	+ }
	lb->ln_n += n_ins - n_del;
	for (i = 0; i < n_ins; i++) {
	int l = s ? linelength(s) : 0;
	t@@ -187,7 +189,7 @@ static void lbuf_opt(struct lbuf lb, char buf, int pos, …
	lopt_done(&lb->hist[i]);
	lb->hist_n = lb->hist_u;
	if (lb->hist_n == lb->hist_sz) {
	- int sz = lb->hist_sz + 128;
	+ int sz = lb->hist_sz + (lb->hist_sz ? lb->hist_sz : 128);
	struct lopt hist = malloc(sz sizeof(hist[0]));
	memcpy(hist, lb->hist, lb->hist_n * sizeof(hist[0]));
	free(lb->hist);