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Seb
Wizard
Joined: 14 Aug 2004
Posts: 1269
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 Posted: Fri Sep 29, 2006 11:23 pm
[1.08] Operator CONCAT requires two arguments
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I've mailed Zugg, but if anyone else gets this error this may help you track down the problem so you can disable the trigger...
The error:
Operator CONCAT requires two arguments
The pattern (not a regular expression) that caused it:
has ({|suddenly })arrived
This problem has been in all versions of CMUD so far. I actually use this technique in quite a few of my triggers to match optional stuff. |
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MattLofton
GURU
Joined: 23 Dec 2000
Posts: 4834
Location: USA
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Posted: Sat Sep 30, 2006 12:07 am
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This is me pulling a very obscure one-liner from an early CMud post by Zugg, so I may have this out of context but I believe we're not allowed to do this anymore. One of the ZMud weirdnesses he got rid of or something.
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edb6377
Magician
Joined: 29 Nov 2005
Posts: 482
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Posted: Sat Sep 30, 2006 12:09 pm
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just change it to {arrived|"suddently arrived"} or whatever..
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Confucious say "Bugs in Programs need Hammer" |
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Guinn
Wizard
Joined: 03 Mar 2001
Posts: 1127
Location: London
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Posted: Sat Sep 30, 2006 10:48 pm
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using {|whatever} doesn't seem weird, it seems perfectly reasonable to want to use imho
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CMUD Pro, Windows Vista x64
Core2 Q6600, 4GB RAM, GeForce 8800GT
Because you need it for text... ;) |
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Zugg
MASTER
Joined: 25 Sep 2000
Posts: 23379
Location: Colorado, USA
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Posted: Mon Oct 02, 2006 6:17 pm
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The real question is to see if regular expressions support this. In other words, can you do
has ((|suddenly ))arrived
in a regular expression and have it work? If regular expressions don't support this, then I might not be able to fix it. Although it if worked in zMUD then I should be able to get it to work in CMUD since they share the same regular expression (PCRE) code. |
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Guinn
Wizard
Joined: 03 Mar 2001
Posts: 1127
Location: London
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_________________
CMUD Pro, Windows Vista x64
Core2 Q6600, 4GB RAM, GeForce 8800GT
Because you need it for text... ;) |
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Arlie
Wanderer
Joined: 09 Jun 2006
Posts: 62
Location: Florida
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Posted: Mon Oct 02, 2006 9:12 pm
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In regex it'd better be expressed as 'has (suddenly)? arrived', wouldn't it? Granted, that's hard to apply to a concatenation function, but is it possible to do something similar in a regex trigger?
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Seb
Wizard
Joined: 14 Aug 2004
Posts: 1269
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Posted: Tue Oct 03, 2006 9:34 pm
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In zMUD,
| Code: |
has ({|suddenly })arrived
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is converted to
| Code: |
has (suddenly |)arrived
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if I click on the convert to Perl regular expression button. It still works (of course) after I do this.
If I use either Zugg's regular expression example above, or the zMUD convertion to regular expression syntax just above, I get a different kind of problem: I no longer get an exception when CMUD has to parse some output through its trigger parser, but if that output matches the regular expression, I get a Converting dialog pop-up, and an apparent inifite-loop, where it tries to convert my settings again and again (using 100% CPU), until finally something times out the process and an Access Violation pops up. I've sent this AV stack trace to Zugg. |
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Seb
Wizard
Joined: 14 Aug 2004
Posts: 1269
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Posted: Tue Oct 03, 2006 9:40 pm
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BTW, also tried
| Code: |
| has (suddenly)?arrived |
and it gives the same problem as the regular expression in my last post (infinite loop).
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