Back reference in regexp replacement

It is. Are you sure you've got the Replace dialog in Regular Expression mode?

And, of course, while $0 is always available, $1 and greater only work when there's a capturing group that  matched in the RE.


Randall Schulz

Ok...I'm now posting a TC here:

Env : IDEA 8.1.3, WinXP

1. Insert text "bughere" into document;
2. Open replace dialog with RE mode turned on;
3. Input 'bug(?=here)' inside 'Text to find' box;
4. Input '$0' in 'Replace with' box;
5. Click 'Find', on the first match click 'Replace'

• Expected: the text remain unchanged;
• Actual: text been replaced as '$0here'.

It looks like the look-ahead sub-expr breaks something. If you don't use that, it works. E.g., if you match (bug)(here) and replace with $0 or with $1$2, it works.

Since you found it, you have the honor of submitting the YouTrack report, after checking to make sure it's not already reported, of course.


Randall Schulz

Bug reported here, thanks for the help.

HI,

I added a note to the bug report mentioning that it occurs for me in 8.1.3, too. Then I noticed that here in the forum you said you were using 8.1.3, but in the bug report it is labeled "Affected versions: Maia EAP 10762"


Randall Schulz