I made an attempt, but I'm not sure if I have the right character.
Is it that same as Alt-Code 217? (┘)
If so, you can type the Alt-Code into the Custom Split window, and it should work.
If not, would be grateful if you could post a sample file with fake data.
I have version 10.2. When I try to do a custom split and paste that character in, it changes to the letters "EOT". The split doesn't work right from there. I wound up handling it through a custom SQL query at my data source. I used the custom SQL to replace that character with "~~~~~", then use the custom split on that sequence. It was extra steps, but it got the job done.
If you finally give up, you can always open it in Excel and do a Replace (ctrl+h on windows). Then replace that character with something else then go back to Tableau.
Isn't EOT same as CHAR(04)?
MID('a b',0,FIND('a b', CHAR(04))-1) should give you a (starting from the beginning until it finds the delimiter)
LEFT('a b',FIND('a b', CHAR(04))-1) would have the same effect.
there is EOT between a and b but appears (and probably got lost in copy-paste)
By using combinations of left/right/mid you can break different tokens.
Split won't allow you to use CHAR(04) since it is a calculated field and it only allows string literals as delimiter.