diff options
Diffstat (limited to 'Src/zsh.h')
| -rw-r--r-- | Src/zsh.h | 30 |
1 files changed, 22 insertions, 8 deletions
@@ -2256,12 +2256,21 @@ typedef wint_t convchar_t; #define MB_METASTRWIDTH(str) mb_metastrlen(str, 1) #define MB_METASTRLEN2(str, widthp) mb_metastrlen(str, widthp) +#ifdef BROKEN_WCWIDTH +#define WCWIDTH(wc) wcwidth_mk(wc) +#else +#define WCWIDTH(wc) wcwidth(wc) +#endif /* - * Note WCWIDTH() takes wint_t, typically as a convchar_t. + * Note WCWIDTH_WINT() takes wint_t, typically as a convchar_t. * It's written to use the wint_t from mb_metacharlenconv() without * further tests. + * + * This version has a non-multibyte definition that simply returns + * 1. We never expose WCWIDTH() in the non-multibyte world since + * it's just a proxy for wcwidth() itself. */ -#define WCWIDTH(wc) zwcwidth(wc) +#define WCWIDTH_WINT(wc) zwcwidth(wc) #define MB_INCOMPLETE ((size_t)-2) #define MB_INVALID ((size_t)-1) @@ -2286,9 +2295,6 @@ typedef wint_t convchar_t; * * wc is assumed to be a wchar_t (i.e. we don't need zwcwidth). * - * This may need to be more careful if we import a wcwidth() for - * compatibility to try to avoid clashes with the system library. - * * Pedantic note: in Unicode, a combining character need not be * zero length. However, we are concerned here about display; * we simply need to know whether the character will be displayed @@ -2296,7 +2302,15 @@ typedef wint_t convchar_t; * sense throughout the shell. I am not aware of a way of * detecting the Unicode trait in standard libraries. */ -#define IS_COMBINING(wc) (wcwidth(wc) == 0) +#ifdef BROKEN_WCWIDTH +/* + * We can't be quite sure the wcwidth we've provided is entirely + * in agreement with the system's, so be extra safe. + */ +#define IS_COMBINING(wc) (WCWIDTH(wc) == 0 && !iswcntrl(wc)) +#else +#define IS_COMBINING(wc) (WCWIDTH(wc) == 0) +#endif /* * Test for the base of a combining character. * @@ -2305,7 +2319,7 @@ typedef wint_t convchar_t; * is, as long as it has non-zero width. We need to avoid all forms of * space because the shell will split words on any whitespace. */ -#define IS_BASECHAR(wc) (iswgraph(wc) && wcwidth(wc) > 0) +#define IS_BASECHAR(wc) (iswgraph(wc) && WCWIDTH(wc) > 0) #else /* not MULTIBYTE_SUPPORT */ @@ -2317,7 +2331,7 @@ typedef int convchar_t; #define MB_METASTRWIDTH(str) ztrlen(str) #define MB_METASTRLEN2(str, widthp) ztrlen(str) -#define WCWIDTH(c) (1) +#define WCWIDTH_WINT(c) (1) /* Leave character or string as is. */ #define ZWC(c) c |