diff options
Diffstat (limited to 'src/character.c')
| -rw-r--r-- | src/character.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/character.c b/src/character.c index deac1fa22ec..6a689808043 100644 --- a/src/character.c +++ b/src/character.c @@ -1050,6 +1050,32 @@ blankp (int c) return XINT (category) == UNICODE_CATEGORY_Zs; /* separator, space */ } + +/* Return true for characters that would read as symbol characters, + but graphically may be confused with some kind of punctuation. We + require an escaping backslash, when such characters begin a + symbol. */ +bool +confusable_symbol_character_p (int ch) +{ + switch (ch) + { + case 0x2018: /* LEFT SINGLE QUOTATION MARK */ + case 0x2019: /* RIGHT SINGLE QUOTATION MARK */ + case 0x201B: /* SINGLE HIGH-REVERSED-9 QUOTATION MARK */ + case 0x201C: /* LEFT DOUBLE QUOTATION MARK */ + case 0x201D: /* RIGHT DOUBLE QUOTATION MARK */ + case 0x201F: /* DOUBLE HIGH-REVERSED-9 QUOTATION MARK */ + case 0x301E: /* DOUBLE PRIME QUOTATION MARK */ + case 0xFF02: /* FULLWIDTH QUOTATION MARK */ + case 0xFF07: /* FULLWIDTH APOSTROPHE */ + return true; + + default: + return false; + } +} + signed char HEXDIGIT_CONST hexdigit[UCHAR_MAX + 1] = { #if HEXDIGIT_IS_CONST |