text compare by ignoring last four characters

[ytyyutianyun]

For example.

left:
c01f294d.jpg

right
c01f294d.png

I want to ignore because the same word "c01f294d"

I watch http://www.scootersoftware.com/suppo..._unimportantv3

And use

\.\w+$

and then uncheck.
But thing is not successful. How can I do it. Thanks.

PS: It is the text compare (in *.txt)

[ytyyutianyun]

Foolish for me when I find the reason, I just uncheck "ignore unimportant..". And administrator can delete the thread.

[Aaron]

No need to delete, as other users might have the same initial problem.

Once an item is unchecked (unimportant) in the Session Settings, Importance tab, it will show up as Blue/Unimportant Difference text in the main compare. However, an Unimportant Difference is still a Difference, and will show up with the different Difference display filters.

However, there is a toggle to "Ignore Unimportant Differences" in the toolbar, which will toggle blue text to black, and treat it as if it were equal text.