mandoc/tbl_term.c: In function 'tbl_fill_border':
mandoc/tbl_term.c:792:46: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
(void)snprintf(buf, sizeof(buf), "\\[u%04x]", c);
^
mandoc/tbl_term.c:792:9: note: 'snprintf' output between 9 and 13 bytes into a destination of size 12
(void)snprintf(buf, sizeof(buf), "\\[u%04x]", c);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~