just --check, --fmt: preserve blank lines between comment lines

[simonmichael]

I like the idea of check and fmt, but could it be changed to preserve blank lines - at least a single blank line - between commented lines ?

I am porting a large makefile, with section headings and many comments, and the blank lines are pretty important for readability; just --fmt is turning it into rather a soup and keeps fighting with my natural style as I edit.

[simonmichael]

Related, I would also appreciate if it didn't enforce the surrounding spaces in {{ VAR }}, fighting with valid and more compact code.

[simonmichael]

Thirdly, it would be good if it didn't discard end-of-line comments # like this one.

In the fourth place, docs say you can chain conditionals like

if .. { .. } else if .. { .. } else { .. }

which works, but --fmt adds more braces like

if .. { .. } else { if .. { .. } else { .. } }

which is noisy, expecially in recipes, where it looks like

{{ if .. { .. } else { if .. { .. } else { .. } } }}