Made backslash escape starting delimiters. #3775
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What is the previous behavior before this PR?
Backslashes before starting delimiters are treated as plain text.
What is the new behavior after this PR?
If a left delimiter is preceded by a backslash (
\), the backslash is stripped and the delimiter is ignored (math mode is not entered). So\$40 is greater than \$30gets transformed to$40 is greater than $30, if$is configured to be a starting delimiter. If it is not, the backslashes are left untouched.BREAKING CHANGE: The only way existing users are affected by this is if they have a backslash immediately (no whitespace or anything) followed by a delimiter that enters math mode. I can't think of any scenario where one would want that, and if one still does one can do
\<span></span>$or\$(or a variety of other methods, zero-width spaces, etc).Fixes #437.