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Bug 2339

Summary: TDEFileReplace regex support needs improvements
Product: TDE Reporter: Michele Calgaro <michele.calgaro>
Component: non-core programsAssignee: Timothy Pearson <kb9vqf>
Status: NEW ---    
Severity: normal CC: bugwatch, michele.calgaro
Priority: P5    
Version: R14.0.x [Trinity]   
Hardware: Other   
OS: Linux   
Compiler Version: TDE Version String:
Application Version: Application Name:
Bug Depends on:    
Bug Blocks: 2969    

Description Michele Calgaro 2015-01-30 01:51:09 CST 
1) 
TDEFileReplace support for regex seems incomplete/poor. For example using \1 in the replace string with the regex option enabled, should insert the first regex group string. Instead a literal \1 is inserted.

2) when using regex patterns in the search and replace strings, TDEFileReplace hangs. Steps to reproduce:
- use \d or (\d) as search string
- use \1\1 as replace string
TDEFileReplace hangs (both in simulation and in replace mode).
Comment 1 Michele Calgaro 2016-04-15 22:34:28 CDT 
It seems matching against regex patterns is quite slow when multiple-choice patterns are specified. Probably the regex engine is using a recurvise approach instead of a FSM. This may explain point 2)