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Diffstat (limited to 'src/include/regex/regcustom.h')
| -rw-r--r-- | src/include/regex/regcustom.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/include/regex/regcustom.h b/src/include/regex/regcustom.h index 459851a7f6b..04a1893c806 100644 --- a/src/include/regex/regcustom.h +++ b/src/include/regex/regcustom.h @@ -77,6 +77,16 @@ typedef unsigned uchr; /* unsigned type that will hold a chr */ */ #define CHR_IS_IN_RANGE(c) ((c) <= CHR_MAX) +/* + * MAX_SIMPLE_CHR is the cutoff between "simple" and "complicated" processing + * in the color map logic. It should usually be chosen high enough to ensure + * that all common characters are <= MAX_SIMPLE_CHR. However, very large + * values will be counterproductive since they cause more regex setup time. + * Also, small values can be helpful for testing the high-color-map logic + * with plain old ASCII input. + */ +#define MAX_SIMPLE_CHR 0x7FF /* suitable value for Unicode */ + /* functions operating on chr */ #define iscalnum(x) pg_wc_isalnum(x) #define iscalpha(x) pg_wc_isalpha(x) |