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patch 8.1.2083: multi-byte chars do not work properly with "%.*S" in printf()

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Problem:    Multi-byte chars do not work properly with "%.*S" in printf().
Solution:   Use mb_ptr2cells(). Daniel Hahler, closes #4989)
This commit is contained in:
Bram Moolenaar
2019-09-27 13:32:06 +02:00
parent 30e8e73506
commit ce0fac2897
3 changed files with 14 additions and 5 deletions
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14
src/message.c
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@@ -4405,12 +4405,16 @@ vim_vsnprintf_typval(
- mb_string2cells((char_u *)str_arg, -1);
if (precision)
{
char_u *p1 = (char_u *)str_arg;
size_t i;
for (i = 0; i < precision && *p1; i++)
p1 += mb_ptr2len(p1);
char_u *p1;
size_t i = 0;
for (p1 = (char_u *)str_arg; *p1;
p1 += mb_ptr2len(p1))
{
i += (size_t)mb_ptr2cells(p1);
if (i > precision)
break;
}
str_arg_l = precision = p1 - (char_u *)str_arg;
}
}