(properties) Incorrect handling of trailing escaped backslash

[Hirse]

Describe the issue
Properties files support multi-line values by using a \ to escape the newline. This works correctly for most cases, but breaks when the last character is an escaped \ (i.e. \\), which might be the case in a Windows path (folder-path = C:\\some\\path\\)

Which language seems to have the issue?
properties

Are you using highlight or highlightAuto?
highlight

Sample Code to Reproduce

a = a1\
    a2
b = b\\
c = c

Expected behavior

[joshgoebel]

Thanks, I feel like we've fixed something like this in other grammars... probably just a matter of adding a separate rule to silently eat \\ so it's not counted by the \ before the end of line rule?

Haven't looked just guessing.