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| author | Kaz Kylheku <kaz@kylheku.com> | 2016-01-04 20:33:14 -0800 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2016-01-04 20:33:14 -0800 |
| commit | 66dae5a4d72765c80d5cd97f5f16a4d095d79f2f (patch) | |
| tree | 279d050457fbbfcd291e1160c52c4e5bb1d7d899 /txr.1 | |
| parent | 11ac283d7eda2bac2f19d62d014043f66c8de84c (diff) | |
| download | txr-66dae5a4d72765c80d5cd97f5f16a4d095d79f2f.tar.gz txr-66dae5a4d72765c80d5cd97f5f16a4d095d79f2f.tar.bz2 txr-66dae5a4d72765c80d5cd97f5f16a4d095d79f2f.zip | |
Revert chr-isdigit/isxdigit, provide new functions.
It was a mistake to change the semantics of the return value
of chr-isdigit and chr-isdigit. It breaks code like
[partition-by chr-isdigit ...]. The behavior of chr-isdigit
and chr-isxdigit is restored to returning t and nil. New
chr-digit and chr-xdigit functions are introduced for
returning the digit value or nil.
* eval.c (eval_init): Register chr-digit and chr-xdigit
intrinsics.
* lib.c (chr_isdigit, chr_isxdigit): Restore old behavior.
(chr_digit, chr_xdigit): New functions.
* lib.h (chr_digit, chr_xdigit): Declared.
* txr.1: Everything documented.
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 26 |
1 files changed, 18 insertions, 8 deletions
@@ -17643,17 +17643,22 @@ ranges from 0 to 31, or is 127. In other words, any non-printable ASCII character. For other characters, it returns .codn nil . -.coNP Function @ chr-isdigit +.coNP Functions @ chr-isdigit and @ chr-digit .synb .mets (chr-isdigit << char ) +.mets (chr-digit << char ) .syne .desc If .meta char -is is an ASCII digit character, +is is an ASCII decimal digit character, .code chr-isdigit -returns the integer value, 0 to 9, corresponding to that character. -Otherwise, it returns +returns the value +.code t +and +.code chr-digit +returns the integer value corresponding to that digit character, +a value in the range 0 to 9. Otherwise, both functions return .codn nil . .coNP Function @ chr-isgraph @@ -17800,18 +17805,23 @@ if is an ASCII upper case letter. Otherwise it returns .codn nil . -.coNP Function @ chr-isxdigit +.coNP Function @ chr-isxdigit and @ chr-xdigit .synb .mets (chr-isxdigit << char ) +.mets (chr-xdigit << char ) .syne .desc If .meta char is a hexadecimal digit character, .code chr-isxdigit -returns its integer value 0 to 15. -Otherwise it returns -.codn nil . +returns the value +.code t +and +.code chr-xdigit +returns the integer value corresponding to that digit character, +a value in the range 0 to 15. Otherwise, both functions returns +.codn nil . A hexadecimal digit is one of the ASCII digit characters |