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tab-complete: figure out the size before copying

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we already need to know the string length since `cursor` needs to be
adjusted.

so just calculate the length beforehand and use `memcpy` to copy exactly
as much as needed (as opposed to `strncpy` which always writes `n`
bytes).
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NRK 2022-09-01 23:51:43 +06:00 committed by Hiltjo Posthuma
parent 32db2b1251
commit 528d39b011
1 changed files with 2 additions and 2 deletions
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dmenu.c
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@ -517,9 +517,9 @@ insert:
case XK_Tab:
if (!sel)
return;
strncpy(text, sel->text, sizeof text - 1);
cursor = strnlen(sel->text, sizeof text - 1);
memcpy(text, sel->text, cursor);
text[sizeof text - 1] = '\0';
cursor = strlen(text);
match();
break;
}