# When using Tag \> Filename, Square Brackets are not displayed
**URL:** https://community.mp3tag.de/t/when-using-tag-filename-square-brackets-are-not-displayed/18610
**Category:** Support
**Created:** [January 13, 2017, 6:51pm UTC](https://community.mp3tag.de/t/when-using-tag-filename-square-brackets-are-not-displayed/18610 "2017-01-13T18:51:02Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@wnci997](https://community.mp3tag.de/u/wnci997)
#### Post date: [January 13, 2017, 6:51pm UTC](https://community.mp3tag.de/t/when-using-tag-filename-square-brackets-are-not-displayed/18610/1 "2017-01-13T18:51:02Z")
As the title says, i am renaming my file based on the genre, artist, and title tages. It works perfectly, except that when i do [%genre%] %title% - %artist% the brackets are unshown, both in the preview and after hitting accept. However curly brackets and parenthesis seem to work fine.
It isnt really a big deal to use another method of separating genres, but i do like how clean the square brackets look. Is this problem on my end, or with the program?
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [January 13, 2017, 6:55pm UTC](https://community.mp3tag.de/t/when-using-tag-filename-square-brackets-are-not-displayed/18610/2 "2017-01-13T18:55:45Z")
The square brackets have a special function in the converter: they enclose optional text and are not displayed .... unless you use ':
'['%genre%']' %title% - %artist%
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### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [January 13, 2017, 6:59pm UTC](https://community.mp3tag.de/t/when-using-tag-filename-square-brackets-are-not-displayed/18610/3 "2017-01-13T18:59:49Z")
> [@wnci997](#):
>
> ... the brackets are unshown ... Is this problem on my end, or with the program?
Hmm, probably, both cases are true.
See helpfile ... [https://docs.mp3tag.de/scripting](https://docs.mp3tag.de/scripting)
section "Characters with special functionality"
... and do understand the difference between ...
[%genre%] ... and ... '['%genre%']'
DD.20170113.2059.CET
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### Author:  [@ryerman](https://community.mp3tag.de/u/ryerman)
#### Post date: [January 13, 2017, 7:05pm UTC](https://community.mp3tag.de/t/when-using-tag-filename-square-brackets-are-not-displayed/18610/4 "2017-01-13T19:05:31Z")
> [@wnci997](#):
>
> ...It isnt really a big deal to use another method of separating genres, but i do like how clean the square brackets look. Is this problem on my end, or with the program?
Tag \> Filename conversions use the Mp3tag scripting functions where the square brackets are used as special characters. See here: [https://docs.mp3tag.de/scripting](https://docs.mp3tag.de/scripting)
Enclose them in single quotes to use them literally.
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### Author:  [@wnci997](https://community.mp3tag.de/u/wnci997)
#### Post date: [January 13, 2017, 7:23pm UTC](https://community.mp3tag.de/t/when-using-tag-filename-square-brackets-are-not-displayed/18610/5 "2017-01-13T19:23:20Z")
Ah, thanks for the info. I wasnt even thinking about special characters, so i guess the fault was with me.
Thanks for the quick help 🙂
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:26pm UTC](https://community.mp3tag.de/t/when-using-tag-filename-square-brackets-are-not-displayed/18610/6 "2026-02-09T12:26:36Z")