Build: NetBeans IDE Dev (Build 200902231810)
VM: Java HotSpot(TM) Client VM, 11.0-b15, Java(TM) SE Runtime Environment, 1.6.0_10-b33
OS: Linux, 2.6.27-13-generic, i386

User Comments:
rptmaestro: This error occured while I was performing a search and replace in a sql file

GUEST: Doing a "find and replace" using regular expressions. I wasn't sure how to put newline characters ("\n") in the "Replace With:" box. I tried \n, which just rendered "n", then i tried $n, which resulted in this error.

sgtgarcia: Search and replace in file whith regular expression in search

GUEST: Search and replace using regexp

mschovanek: to reproduce:
-----------
1) in a editor window invoke Find & Replace
2) check Regular Expressions box
3) find: a replace: ${a}
ERROR: IDE throws the IAE

We should improve the way how IDE handles this RE errors. Eg. in FCS build user can easily miss it.

GUEST: Doing a search and replace with $$ in the replacement text

petiex: find replace with regular expressions



Stacktrace: 
java.lang.IllegalArgumentException: Illegal group reference
        at java.util.regex.Matcher.appendReplacement(Matcher.java:713)
        at java.util.regex.Matcher.replaceFirst(Matcher.java:861)
        at org.netbeans.modules.editor.lib2.search.DocumentFinder.findReplaceImpl(DocumentFinder.java:253)
        at org.netbeans.modules.editor.lib2.search.DocumentFinder.findReplaceResult(DocumentFinder.java:312)
        at org.netbeans.modules.editor.lib2.search.EditorFindSupport.findReplaceInBlock(EditorFindSupport.java:596)
        at org.netbeans.modules.editor.lib2.search.EditorFindSupport.replaceAll(EditorFindSupport.java:779)