Remove vestigial comment in advancedSymbols.js
TeX backslash control sequences are letters-only, whereas HTML character
entity references are alphanumeric; therefore `∴` is a valid
character entity reference, but `\there4` cannot be a valid control
sequence. Initially I hoped to support every character entity reference
as a backslash command, but we can't support this one, so forget it.
The out-of-place "case" is because backslash commands used to be a
switch/case, not a dictionary:
https://github.com/mathquill/mathquill/commit/77bd6c476f081979c6ea754ece77eff783f3c928#diff-239c238d8c090904fa1a9261bf2ef674L961
diff --git a/src/commands/math/advancedSymbols.js b/src/commands/math/advancedSymbols.js
index b7240aa..3ce1318 100644
--- a/src/commands/math/advancedSymbols.js
+++ b/src/commands/math/advancedSymbols.js
@@ -16,7 +16,7 @@
LatexCmds['∗'] = LatexCmds.ast = LatexCmds.star = LatexCmds.loast = LatexCmds.lowast =
bind(BinaryOperator,'\\ast ','∗');
- //case 'there4 = // a special exception for this one, perhaps?
+
LatexCmds.therefor = LatexCmds.therefore =
bind(BinaryOperator,'\\therefore ','∴');
