diffWordsWithSpace - a char-by-char diff for spaces?

[rlidwka]

require('diff').convertChangesToXML(
  require('diff').diffWordsWithSpace('foo\nbar', 'foo\n\n\nbar')
)

Returns:

'foo<del>\n</del><ins>\n\n\n</ins>bar'

Desired output is:

'foo<ins>\n\n</ins>bar'

As far as I understand, diffWordsWithSpace currently treats any amount of spaces as a single token. Which makes sense for diffWords (where space isn't significant), but doesn't work well for diffWordsWithSpace.

Suggestion: maybe it should compare spaces between words on character-by-character basis?

Possible solution - change regexp in tokenizer like this:

<   let tokens = value.split(/(\s+|\b)/);
---
>   let tokens = this.options.ignoreWhitespace ?
>                value.split(/(\s+|\b)/) :
>                value.split(/(\s|\b)/);

Seems to work fine for me, but I'm not quite sure it's correct.