diff options
Diffstat (limited to 'Src')
| -rw-r--r-- | Src/Modules/zutil.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/Src/Modules/zutil.c b/Src/Modules/zutil.c index c4fe4a15e..24659cb16 100644 --- a/Src/Modules/zutil.c +++ b/Src/Modules/zutil.c @@ -88,7 +88,8 @@ typedef struct style *Style; struct style { struct hashnode node; - Stypat pats; /* patterns */ + Stypat pats; /* patterns, sorted by weight descending, then + by order of definition, newest first. */ }; struct stypat { @@ -337,7 +338,19 @@ setstypat(Style s, char *pat, Patprog prog, char **vals, int eval) p->eval = eprog; p->next = NULL; - /* Calculate the weight. */ + /* Calculate the weight. + * + * The weight of a pattern is scored as follows: + * + * - The pattern is split to colon-separated components. + * - A component equal to '*' (with nothing else) scores 0 points. + * - A component that's a pattern, otherwise, scores 1 point. + * - A component that's a literal string scores 2 points. + * - The score of a pattern is the sum of the score of its components. + * + * This corresponds to the notion of 'more specific' in the zshmodules(1) + * documentation of zstyle. + */ for (weight = 0, tmp = 2, first = 1, str = pat; *str; str++) { if (first && *str == '*' && (!str[1] || str[1] == ':')) { @@ -362,9 +375,9 @@ setstypat(Style s, char *pat, Patprog prog, char **vals, int eval) } p->weight = (weight += tmp); + /* Insert 'q' to 's->pats', using 'qq' as a temporary. */ for (qq = NULL, q = s->pats; q && q->weight >= weight; qq = q, q = q->next); - p->next = q; if (qq) qq->next = p; |