Fix issues with line breaks and spacing in SVG output. (mathjax/MathJax#3166) #1043
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This issue fixes several issues with in-line line breaking in SVG mode that arise when extra spacing is placed around operators, as is done by
\implies, orA\;+\;B, for example. When in-line breaks are allowed, SVG output will lose the spacing around the operator (both the extra spacing as well as the normal operator spacing).Both issues are cause primarily by the
computeLineBBox()function for the SVGmspacewrapper. The size of the space was lost because the width was not being added to theLineBBox, and the operator spacing was lost because theisFirstproperty was assuming that the mspace had no width (i.e., was used for line-breaking only).I also moved
* scaleinside a conditional since there is no need to multiply 0 by the scale.The
LineBBox.append()is modified to make sure thatoriginalLis not lost if it has already been set earlier on.Resolves issue mathjax/MathJax#3166.