# \[F\] Possible regular expression anchor bug
**URL:** https://community.mp3tag.de/t/f-possible-regular-expression-anchor-bug/2608
**Category:** Fixed Bugs
**Tags:** bug-fixed
**Created:** [December 9, 2005, 9:36pm UTC](https://community.mp3tag.de/t/f-possible-regular-expression-anchor-bug/2608 "2005-12-09T21:36:27Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@tanwolf](https://community.mp3tag.de/u/tanwolf)
#### Post date: [December 9, 2005, 9:36pm UTC](https://community.mp3tag.de/t/f-possible-regular-expression-anchor-bug/2608/1 "2005-12-09T21:36:27Z")
When I use regular expressions to remove leading and trailing white space, if the field contains any number of '$' characters, half of them will be removed.
For example, "$$$$" becomes "$" and "$$$$$$$$" becomes "$$", because each regular expression removes half of the '$'.
These are the regular expressions I'm using.
"^\s\*" --\> ""
"\s\*$" --\> ""
I haven't tested this behavior in any other regular expression matching software, but I don't think this is the exprected behavior.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [December 12, 2005, 12:49pm UTC](https://community.mp3tag.de/t/f-possible-regular-expression-anchor-bug/2608/2 "2005-12-12T12:49:00Z")
I hope to fix this to the next release.
Thanks for reporting!
Best regards,
~ Florian
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [December 17, 2005, 10:47am UTC](https://community.mp3tag.de/t/f-possible-regular-expression-anchor-bug/2608/3 "2005-12-17T10:47:41Z")
This bug is now fixed with the latest [Development Build](http://developer.mp3tag.de).
Best regards,
~ Florian
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [December 28, 2018, 1:40pm UTC](https://community.mp3tag.de/t/f-possible-regular-expression-anchor-bug/2608/4 "2018-12-28T13:40:35Z")
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