Ignoring empty lines counting

[Alan Kilborn]

I’ll create an issue if you haven’t already…

The issue that was opened:

https://github.com/notepad-plus-plus/notepad-plus-plus/issues/13608

[guy038]

Hi, @mark-olson, @alan-kilborn and All,

Did you notice this fact :

• The regex ^$, indeed, does not count true empty lines !

but :

• The regex ^\R does count empty lines !!

BR

guy038

[Alan Kilborn]

@guy038 said in Ignoring empty lines counting:

The regex ^$, indeed, does not count true empty lines !

but :

The regex ^\R does count empty lines !!

If the regex is purely an assertion, e.g. ^$ or \b (to name but two), then its match won’t be counted by Count.

[Coises]

@Alan-Kilborn said in Ignoring empty lines counting:

@guy038 said in Ignoring empty lines counting:

The regex ^$, indeed, does not count true empty lines !

but :

The regex ^\R does count empty lines !!

If the regex is purely an assertion, e.g. ^$ or \b (to name but two), then its match won’t be counted by Count.

True (since a pure assertion is always an empty match), but empty matches aren’t counted regardless of how the regular expression is specified. In a file that has empty lines, but no lines containing only capital Ws, ^W*$ counts zero matches. ^\R counts all empty lines (except the last line, if it’s empty) because it isn’t an empty match: it matches line ending characters. ^.*$ and ^.+$ both count all lines that are not empty.