Filter to compare only .cpp and .h files

[derricck]

I'm trying to create a filter to compare only .cpp and .h files but it shouldn't compare folders which name .vshistory.

This is what i got:

## This is a directory/file filter template for WinMerge
name: C++ Files
desc: Filter for C++ source and header files

## This is an exclusive filter
## (it lets through only matching files)
def: exclude

f: \.(cpp|h)$  ## To compare only .cpp and .h files
d: \\(?<!\.vshistory)

Its comparing only .cpp and .h files but its not ignoring the .vshistory folder, whats wrong?

[sdottaka]

If you change d: \\(?<!\.vshistory) to d: \\(?<!\.vshistory)$ it should work as expected.

[derricck]

Why the $ is required?

[sdottaka]

If the regular expression is \\(?<!\.vshistory) and there is a folder path called subfolder\.vshistory, it will match the \ in this folder path, so this folder path will not be ignored like .cpp and .h.
Adding $ will prevent subfolder\.vshistory from being matched.

[sdottaka]

Oops, \\(?<!\.vshistory)$ ignores .vshistory, but it seems to ignore other folders too.
This URL regex seems better:
https://stackoverflow.com/a/78920208/22955231