diff options
| author | Kenichi Handa <[email protected]> | 1997-05-16 00:43:26 +0000 |
|---|---|---|
| committer | Kenichi Handa <[email protected]> | 1997-05-16 00:43:26 +0000 |
| commit | c6112b99dc8fe272b0413f2dba94eef2e606d44a (patch) | |
| tree | 8b58ed171ee7219308eed2b92fe621cdc7bfef35 /src/charset.h | |
| parent | 4b9171878a806e4999c3022a42866d2bdcdeeba3 (diff) | |
(VALID_CHAR_P): New macro.
(CHAR_STRING): Comment modified
Diffstat (limited to 'src/charset.h')
| -rw-r--r-- | src/charset.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/charset.h b/src/charset.h index d315dd6fa8..73f043aafa 100644 --- a/src/charset.h +++ b/src/charset.h @@ -463,6 +463,16 @@ extern int width_by_char_head[256]; ? (c1) \ : MAKE_NON_ASCII_CHAR ((charset), (c1) & 0x7F, (c2) & 0x7F)) +/* 1 if C is in the range of possible character code Emacs can have. */ +#define VALID_CHAR_P(c) \ + ((c) >= 0 \ + && (SINGLE_BYTE_CHAR_P (c) \ + || ((c) < MIN_CHAR_COMPOSITION \ + ? ((c) & CHAR_FIELD1_MASK \ + ? (CHAR_FIELD2 (c) >= 32 && CHAR_FIELD3 (c) >= 32) \ + : (CHAR_FIELD2 (c) >= 16 && CHAR_FIELD3 (c) >= 32)) \ + : (c) < MIN_CHAR_COMPOSITION + n_cmpchars))) + /* The charset of non-ASCII character C is set to CHARSET, and the position-codes of C are set to C1 and C2. C2 of DIMENSION1 character is -1. */ @@ -517,7 +527,7 @@ extern int iso_charset_table[2][2][128]; is not a composite character, the multi-byte form is set in WORKBUF and STR points WORKBUF. The caller should allocate at least 4-byte area at WORKBUF in advance. Returns the length of the multi-byte - form. */ + form. If C is an invalid character code, signal an error. */ #define CHAR_STRING(c, workbuf, str) \ (SINGLE_BYTE_CHAR_P (c) \ |