isAlphaNum includes mark characters, but neither isAlpha nor isNumber do
> isMark '\768'
True
> isAlphaNum '\768'
True
> (isAlpha '\768', isNumber '\768')
(False,False)
This behavior comes from this piece in WCsubst.c:
unipred(u_iswalnum,(GENCAT_LT|GENCAT_LU|GENCAT_LL|GENCAT_LM|GENCAT_LO|
GENCAT_MC|GENCAT_ME|GENCAT_MN|
GENCAT_NO|GENCAT_ND|GENCAT_NL))
I'm not sure what should be done here. Is it a bug with isAlpaNum? Or with isAlpha? How does it correspond to iswalnum's behavior in C++?
(And if it's a feature and not a bug, then it should definitely be documented.)
Trac metadata
Trac field | Value |
---|---|
Version | 7.10.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | libraries/base |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | ekmett, hvr |
Operating system | |
Architecture |