Help with a regex

usegalaxy.eu support
1

Good morning Europe,
I’m using the filter fasta tool to …filter a fasta file. I’m trying to filter on a list of sequence IDs but the filter fasta tool seems to remove pipes, which are part of the sequence ID that I’m trying to filter. There is an option to formulate my own regex but I have tried and failed…Sorry but regular expressions are part of a previous life and at this moment, even after a cup of coffee, I am failing to do it. Any help is appreciated.

Here is a link to my history:
https://usegalaxy.eu/u/mike-t/h/cgep1-cgep4

2

Hi @Michael_Thon,
https://regex101.com/ is my go-to site for developing regexes.

Also note that the way this tool works is that, by default it’ll compare your provided IDs to only the part of the fasta headers before the first |. So unless you need the part after the | to distinguish your sequences, there is no need to resort to the regex pattern.