Bugs item #1530313, was opened at 2006-07-28 13:02
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Category: Scintilla
Group: Bug
Status: Open
Resolution: None
Priority: 5
Submitted By: Nicola Civran (nyk)
Assigned to: Nobody/Anonymous (nobody)
Summary: Unexpected result of funcition StyleContext::Match()
Initial Comment:
I think there is a bug in all StyleContext::Match()
functions, when testing characters with ASCII code >
127. In my lexer, I need to use sc.Match('°'), but this
call always returns false, even when sc.ch IS '°'.
It happens that StyleContext's ctor (and
StyleContext::GetNextChar() as well) gets characters
from its styler as char, casts them to unsigned and
stores them as int. So, a character like '°' (0xB0)
will be stored in sc.ch as 176 (0x000000B0), but when
used as parameter in sc.Match('°') its value is -80,
that promoted to int become 0xFFFFFFB0.
I can overcome the problem simply writing:
sc.ch == static_cast<unsigned char>('°')
but perhaps will be more useful to change the Match
functions all together, so I post a possible fix.
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