As NGLess uses a version declaration string at the top of script means that NGLess can change its behaviour depending on the version used in the script.
This page documents the fixes that are currently implemented.
min_identity_pchave slightly changed.
countfilereorders its input if necessary.
countfunction now accepts multiple lines of comments at the top of its
selecthandles a strange corner case differently (it was arguably wrong before, but affects very few reads).
countfunction now defaults to
preprocessfunction now modifies its argument. Older code using
preprocess(input) using |r|: ...
is automatically treated as:
input = preprocess(input) using |r|: ...