Improve rule coding, including for \sqrt. (#776)

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* Improve rule coding.

* Rule widths (overline, underline, fraction, sqrt) actually scale
  with the current font size in AMS-TeX. Implement that. (Sqrt is
  a special case: the rule width depends on the font size *of the
  surd*.)
* Change the CSS coding for rules. The old, complex coding prevented
  variable-width lines and may have contributed to issues like #696.
  Its purpose, according to 0a3a2271f4,
  was IE8 support; but KaTeX no longer supports IE8.

* The 0.5px offset makes larger sizes better, smaller sizes worse.

Smaller sizes seem more important.

* Cleanup (intended to be squashed).

...

This commit is contained in:

Eddie Kohler

2017-08-06 15:11:23 -04:00

committed by Kevin Barabash

parent 766487bfe3

commit dcdca732a3

14 changed files with 49 additions and 72 deletions

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