Mercurial > vim
diff src/screen.c @ 25978:40b17deb294f v8.2.3522
patch 8.2.3522: cannot use x and u when setting 'listchars'
Commit: https://github.com/vim/vim/commit/93ff6720fe4427341bc426b6d46e6324f226c270
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Oct 16 17:51:40 2021 +0100
patch 8.2.3522: cannot use \x and \u when setting 'listchars'
Problem: Cannot use \x and \u when setting 'listchars'.
Solution: Support hex and unicode in hex form. (closes https://github.com/vim/vim/issues/9006)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Sat, 16 Oct 2021 19:00:03 +0200 |
| parents | bf09d07f098e |
| children | 7b07f361b1d4 |
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--- a/src/screen.c +++ b/src/screen.c @@ -4777,6 +4777,35 @@ screen_screenrow(void) #endif /* + * Calls mb_ptr2char_adv(p) and returns the character. + * If "p" starts with "\x", "\u" or "\U" the hex or unicode value is used. + */ + static int +get_encoded_char_adv(char_u **p) +{ + char_u *s = *p; + + if (s[0] == '\\' && (s[1] == 'x' || s[1] == 'u' || s[1] == 'U')) + { + varnumber_T num = 0; + int bytes; + int n; + + for (bytes = s[1] == 'x' ? 1 : s[1] == 'u' ? 2 : 4; bytes > 0; --bytes) + { + *p += 2; + n = hexhex2nr(*p); + if (n < 0) + return 0; + num = num * 256 + n; + } + *p += 2; + return num; + } + return mb_ptr2char_adv(p); +} + +/* * Handle setting 'listchars' or 'fillchars'. * Assume monocell characters. * Returns error message, NULL if it's OK. @@ -4884,19 +4913,19 @@ set_chars_option(win_T *wp, char_u **var { c2 = c3 = 0; s = p + len + 1; - c1 = mb_ptr2char_adv(&s); + c1 = get_encoded_char_adv(&s); if (mb_char2cells(c1) > 1) return e_invarg; if (tab[i].cp == &lcs_chars.tab2) { if (*s == NUL) return e_invarg; - c2 = mb_ptr2char_adv(&s); + c2 = get_encoded_char_adv(&s); if (mb_char2cells(c2) > 1) return e_invarg; if (!(*s == ',' || *s == NUL)) { - c3 = mb_ptr2char_adv(&s); + c3 = get_encoded_char_adv(&s); if (mb_char2cells(c3) > 1) return e_invarg; } @@ -4938,7 +4967,7 @@ set_chars_option(win_T *wp, char_u **var multispace_len = 0; while (*s != NUL && *s != ',') { - c1 = mb_ptr2char_adv(&s); + c1 = get_encoded_char_adv(&s); if (mb_char2cells(c1) > 1) return e_invarg; ++multispace_len; @@ -4954,7 +4983,7 @@ set_chars_option(win_T *wp, char_u **var while (*s != NUL && *s != ',') { - c1 = mb_ptr2char_adv(&s); + c1 = get_encoded_char_adv(&s); if (p == last_multispace) lcs_chars.multispace[multispace_pos++] = c1; }