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opt: better handling number bounds (#13783)

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This commit is contained in:
Sirisak Lueangsaksri
2021-01-19 23:37:57 +07:00
parent f1f170a2e7
commit b7d60c0483
1 changed files with 8 additions and 3 deletions
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11
src/nvim/option.c
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@@ -3245,10 +3245,15 @@ int check_signcolumn(char_u *val)
// check for 'auto:<NUMBER>-<NUMBER>'
if (STRLEN(val) == 8
&& !STRNCMP(val, "auto:", 5)
&& ascii_isdigit(*(val + 5))
&& *(val + 6) == '-'
&& ascii_isdigit(*(val + 7))
&& ascii_isdigit(val[5])
&& val[6] == '-'
&& ascii_isdigit(val[7])
) {
int min = val[5] - '0';
int max = val[7] - '0';
if (min < 1 || max < 2 || min > 8 || max > 9 || min >= max) {
return FAIL;
}
return OK;
}