Line Filters does not work

[testtarou7]

I am asking about the Winmerge line filter.

When comparing two text files, I want to use a line filter to exclude lines that contain certain strings from the comparison, but I can't get it to exclude them.

For example
File 1
aaa
bbb 123
ccc

File 2
aaa
bbb 456
ccc
The string "bbb" was successfully excluded for the two files.

However, even if the string "bbb" is also excluded, as shown in the image
File 1
aaa
bbb 123
ccc 123

File 2
aaa
bbb 456
ccc 456
The line filter does not work well for a series of lines with different contents.

Incidentally, in the above example, if I insert a line break (blank line) between bbb and ccc, the line filter works, but I want to apply the line filter to consecutive lines.

Please let me know if you have any solutions.

[sdottaka]

Unfortunately, the current line filter behaves like this.

As a workaround, instead of the line filter, if you set the PrediffLineFilter prediffer plugin as follows, I think you will get the expected result.

[testtarou7]

Thanks for the very clear explanation！

I got the results I expected.

I did'nt know that is the winmerge specification.

[sdottaka]

This issue will be closed with improvements in PR #2032.