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Escape Characters in trigger script

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Posted by Rene (46 posts) Bio

Date

Tue 23 Jul 2019 07:51 PM (UTC)

Amended on Tue 23 Jul 2019 07:52 PM (UTC) by Rene

Message

Hello,
I noticed that in string.match and string.gsub I need to escape hyphens, i.e. instead of '-' to use '%-' to match a hyphen.
So to replace any hyphens in the matching pattern I used:


match_string = "New-York"
match_string = string.gsub(match_string, "%-", "%%-")
city_match = string.match("I Love New-York", match_string)

This worked fine in a plugin. However I tried doing the same thing from withing MUSH in a trigger (ctrl+shift+8) with Send To as script, and I found that it was not working because it was not escaping the hyphen anymore and even after 'string.gsub' 'match_string' was still "New-York" and not "New%-York" like in the plugin. How can I fix this?
Thanks.

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Posted by Nick Gammon Australia (23,120 posts) Bio Forum Administrator

Date Reply #1 on Tue 23 Jul 2019 08:52 PM (UTC)

Message

In "send to script" you use %something for wildcards (eg. %1 for wildcard 1).

Thus in send-to-script you must double the % symbols if you want a %.

For example:


match_string = string.gsub(match_string, "%%-", "%%%%-")

- Nick Gammon

www.gammon.com.au, www.mushclient.com

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