Add \textbackslash and \textasciicircum

[edemaine]

Fix #1838. Conveniently, these characters already seem to be in the fonts (no warnings about metrics).

[codecov-io]

Codecov Report

Merging #1839 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1839      +/-   ##
==========================================
+ Coverage    94.6%   94.61%   +<.01%     
==========================================
  Files          80       80              
  Lines        4655     4657       +2     
  Branches      810      810              
==========================================
+ Hits         4404     4406       +2     
  Misses        226      226              
  Partials       25       25

Flag	Coverage Δ
#screenshotter	88.84% <100%> (ø)	⬆️
#test	86.66% <100%> (ø)	⬆️

Impacted Files	Coverage Δ
src/symbols.js	100% <100%> (ø)	⬆️

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[ronkok]

Looks good to me.

[ronkok]

Before merging, can you add these functions to the documentation?

[edemaine]

@ronkok Thanks, I forgot! Do you want to review the documentation table change before I merge?

[ronkok]

@edemaine I am seeing the oddest thing. When I look at the source text of support_table.md and supported.md, they look fine. But when I look at https://deploy-preview-1839--katex.netlify.com/docs/supported.html, \textasciicircum is there, but \textbackslash is missing. \textbackslash is also missing when I look at the deploy preview of the support table.

Perhaps I am doing something wrong with deploy preview. Any ideas?

[edemaine]

@ronkok I also didn't see the update until remembering to go the "master" version: https://deploy-preview-1839--katex.netlify.com/docs/next/supported.html

[ronkok]

Yes, that's better.