# Replacing blank tags

**URL:** <https://community.mp3tag.de/t/replacing-blank-tags/14822>\
**Category:** Support\
**Created:** [June 20, 2013, 11:35pm UTC](https://community.mp3tag.de/t/replacing-blank-tags/14822 "2013-06-20T23:35:41Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![hdnrs](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/h/977dab/32.png) [@hdnrs](https://community.mp3tag.de/u/hdnrs)\
**Post date:** [June 20, 2013, 11:35pm UTC](https://community.mp3tag.de/t/replacing-blank-tags/14822/1 "2013-06-20T23:35:41Z")

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I'd like to replace all blank disc numbers with a one, but am unable to figure out how to match a blank...  
In vi i'd just use  
^$ but this doesn't seem to work. How can I pattern match a blank field?

Thanks

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**Author:** ![dano](https://community.mp3tag.de/user_avatar/community.mp3tag.de/dano/32/6_2.png) [@dano](https://community.mp3tag.de/u/dano)\
**Post date:** [June 21, 2013, 4:34am UTC](https://community.mp3tag.de/t/replacing-blank-tags/14822/2 "2013-06-21T04:34:42Z")

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You can use a different action type:

_Action type:_ **Format value**  
_Field:_ **DISCNUMBER**  
_Format string:_ **$if2(%discnumber%,1)**

which means if %discnumber% has already a value, keep it. If not set it to 1.

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**Author:** ![hdnrs](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/h/977dab/32.png) [@hdnrs](https://community.mp3tag.de/u/hdnrs)\
**Post date:** [June 21, 2013, 9:42pm UTC](https://community.mp3tag.de/t/replacing-blank-tags/14822/3 "2013-06-21T21:42:33Z")

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Thank you.

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**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\
**Post date:** [February 9, 2026, 12:24pm UTC](https://community.mp3tag.de/t/replacing-blank-tags/14822/4 "2026-02-09T12:24:32Z")

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Closed on February 9, 2026, 12:24pm UTC