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 |