How can I omit empty string from output?

Posted by Niko on Mon 15 Apr 2002 01:13 PM — 4 posts, 15,481 views.

Niko Mon 15 Apr 2002 01:13 PM #0

Please, show me the trigger that catch an empty string. The "^$" does not work. :(

Magnum Canada Mon 15 Apr 2002 06:55 PM #1

Just out of curiousity, you DID have "regular expression" checked, right?

Nick Gammon Australia Forum Administrator Mon 15 Apr 2002 10:13 PM #2

It worked for me.



Trigger: ^$

Regular expression: checked

Send: -->Blank line detected<--

Send to: Output

Here is a test ...



look

A Stone Corridor

This is the stage of your training where you may begin to feel pangs of hunger and a parched throat.  In other words, you need food and drink.  To the east is the Darkhaven Supply Store.  You may purchase water and some meat.  Once you have eaten and drunk, you will be ready to proceed north.  

Exits: north east.

-->Blank line detected<--

<3000hp 5000m 3100mv>

The blank line after the exits triggered the trigger, which displayed the message on the screen.

By checking "omit from output" the line is omitted.

Nick Gammon Australia Forum Administrator Mon 15 Apr 2002 10:14 PM #3

Maybe the MUD is sending spaces, you could make the trigger:



Match on: ^[ ]*$

Regular expression: checked

The "[ ]*" says "match on zero or more spaces".