Mass rename files with Regex

[jannn]

Hello, I wish to rename files, I have success but some names are cut of 2 last same characters (BB, CC or GG). What is bad in my command please?
Image: http://www.onweb.cz/regex.jpg

[Stefan2]

Hi and welcome.

Because you have told TC to remove doubled parts (BB, CC or GG) with your expression: (.*)\1

That more complicate expression is not need at all for your issue and TCs regex engine, just use only -.+
And it would be fine to post the names and the expression additionally as text here too, so others can use that for testing what's going on.




 

[jannn]

I would like to rename (cut) file name just to first dash. I use command (.*)\1-(.*)
It works fine for names like PH0609_BE-EYESHADOW-LUMIERE-BLUE-EMERALD.jpg but not for PH0609_BB-EYESHADOW-LUMIERE-BLAZING-BLUE.jpg
result (bad): PH0609_.jpg
correct result: PH0609_BB.jpg

[Stefan2]

Yes, as I wrote

... just use only -.+

FROM:
PH0609_BE-EYESHADOW-LUMIERE-BLUE-EMERALD.jpg
PH0609_BB-EYESHADOW-LUMIERE-BLAZING-BLUE.jpg
TO:
PH0609_BE.jpg
PH0609_BB.jpg

USE MRT (multi rename tool):
Search : -.+
Replace:<Clear>
[_]E
[x]RegEx


Explanation:
-.+ >>>>> match anything one-ore-more times from first hyphen greedy to the end

---

You have shown in your linked picture:

FROM:
PH0609_BE-EYESHADOW-LUMIERE-BLUE-EMERALD.jpg
PH0609_BB-EYESHADOW-LUMIERE-BLAZING-BLUE.jpg
TO:
PH0609_BE.jpg
PH0609_.jpg

Search : (.*)\1-(.*)
Replace:<Clear>
[_]E
[x]RegEx

Explanation:
(.*)- >>>>> match anything until an hyphen
(.*)\1- >>> match anything which arise twice (doubled like "BB") until an hyphen
(.*)\1-(.*)> match anything which arise twice until an hyphen and then greedy the rest

And you have used the star-multiplicator * which means none-or-more occurrences.
So if (.*) match nothing and \1 means double "those nothing", it is just ignored.


 

[jannn]

Thank you very much for help.