Blank lines are stripped, making code a little less readable

[hyperair]

When separating sections of code with a blank line to form "paragraphs for readability, they all disappear after being processed by this plugin.

e.g. The following jsonata

(
    $fn1 := function($v) { 'asdf: ' & $v };
    $fn2 := function($v) { $v & $v };

    $fn1("something");
)

gets formatted to

(
    $fn1 := function($v) { 'asdf: ' & $v };
    $fn2 := function($v) { $v & $v };
    $fn1("something");
)

[asennikov]

I don't remember in detail, but this could be a limitation of JSONata's AST tree - it does not contain detailed information about where an expression ends, so it's impossible to preserve the whitespace easily, only the meaningful content.

[hyperair]

Yeah looks like it. I had a look at the ast, looks like it only contains the start point of each node. I think a similar approach as what's done for comments might work for this -- use a regex to scan for blank lines (or lines containing only whitespace).

But I do note that the approach used for comments doesn't seem to work very well either (#729) so maybe that needs to be fixed first.