steps:
1) Create following directory structure in the current folder
a/ <-- symlink to any folder
b/c.txt
2) create filter for search
- a D+ (mask: a)
3) uncheck 'Search in symbolic links'
search for c*
result - c.txt file not found
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if 'Search in symbolic links' is checked the c.txt file will be found
version 3.0 (build 5049) x86