Hi.

I have a model where the user (via a WLineEdit) can enter a search 
string or a regular expression to search in the model. This is then 
passed on to a WSortFilterProxyModel->setFilterRegExp() to filter and 
display the results.

I subclasses the filterAcceptRow() to be able to do simple text matching 
   if the search string was not a regular expression. (Qt solves this 
easy with the QRegExp::FixedString option instead of the need for 
subclassing)

However, if the user types a search string which contains an unmatched 
parenthesis I get fatal errors. Is this expected behavior?

Actually, this alone gives fatal errors:

WRegExp rx("Hello(World"); //by purpose give an unmatched unescaped 
parenthesis

Before I can check validity with rx.isValid(), the session is destroyed.
[error] Error during event handling: Unmatched ( or \(
[fatal] Unmatched ( or \(

Suggestions? Is this a bug, or do I need to test the user input before 
passed to WSortFilterProxyModel->setFilterRegExp() ?

-Magnus


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