(old post) Batch rename with regular expression [solved]

[michel038]

I don't know if it's a bug or a suggestion ...

I'm trying to build a reg. exp in a sand box (regex101.com)
I want to add a word in filenames ... by replacing (year) by (year janvier)

regex01.png (13.2 KiB) Viewed 2319 times

This is working, the four digits of (year) are stored in $1


But XnViewMP does not process $1 in batch rename

regex02.png (11.18 KiB) Viewed 2319 times

Thanks

[xnview]

you can't use $1, please try

DCP

->

janvier DCP

[michel038]

Yes, it's ok for this particular case ("DCP"),
I have already renamed files with similar methods, changing criterias in each case.

But it would be nice if full Regex was supported for other users in the future

Thanks

[michel038]

Six years later, I found the answer in this post
Thanks to Jkm ...

Instead of using $1,$2,$3... we must use \1 , \2 , \3

In my example : replace ^([0-9]{4} by \1 janvier