Question
· 8 hr ago

Non ascii characters got considered as a question mark inside regex engine. Is this a bug ?

#InterSystems IRIS

The following regex is matching while I think it should not :

write $match("♥","\?") //print '1' (unexpected)

It should only match the '?' character. I think what happen is the ♥ character got converted to '?' (as it's not within regular ascii range) before being validated by the regex engine.

In fact, this give a clue about what happen : 

write $char($ascii("♥")) //print '?'

Is this an IRIS well known limitation, is there workarounds ? Should I report it to InterSystems ?

In my case, a way to detect non standard ascii code in a string will be good enough. I'm not sure if it's possible if all string function consider those special characters as '?'.

Product version: IRIS 2024.1
$ZV: IRIS for Windows (x86-64) 2024.1.2 (Build 398U) Thu Oct 3 2024 14:01:59 EDT
Discussion (5)1
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Norman W. Freeman · 2 hr ago

I also did the following test : create a routine with "write $ascii("♥")" inside and call it from outside (eg: Studio console). It works (so server code also works).

However I have a IRIS server where write $ascii("♥") always return 63, even in code and Terminal. Is there a settings somewhere in portal for UTF-8 support ?

EDIT : I found where it's being defined, it's inside NLS (National Language Settings). 

The server has Latin1 defined, while the working local station has UTF-8. You can define different tables per category : for Terminal, Process, ...

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