EOF error with overrightarrow & superior/inferior

[jbg77]

Hello,

I have an error with parsing to string, the overrightarrow & superior/inferior don't work:

Exception while invoking method 'createPDF' ParseError: KaTeX parse error: Expected 'EOF', got '\overrightarrow' at position 15: \overrightarrow̲{grad}V=\frac{
    at new ParseError (/bundle/bundle/programs/server/npm/node_modules/katex/src/ParseError.js:29:16)
    at Parser.expect (/bundle/bundle/programs/server/npm/node_modules/katex/src/Parser.js:76:15)
    at Parser.parseInput (/bundle/bundle/programs/server/npm/node_modules/katex/src/Parser.js:116:10)
    at Parser.parse (/bundle/bundle/programs/server/npm/node_modules/katex/src/Parser.js:105:22)
    at parseTree (/bundle/bundle/programs/server/npm/node_modules/katex/src/parseTree.js:14:19)
    at Object.renderToString (/bundle/bundle/programs/server/npm/node_modules/katex/katex.js:52:16)

Exception while invoking method 'createPDF' ParseError: KaTeX parse error: Expected 'EOF', got '&' at position 30: V}{\partial r}&̲lt;0
    at new ParseError (/bundle/bundle/programs/server/npm/node_modules/katex/src/ParseError.js:29:16)
    at Parser.expect (/bundle/bundle/programs/server/npm/node_modules/katex/src/Parser.js:76:15)
    at Parser.parseInput (/bundle/bundle/programs/server/npm/node_modules/katex/src/Parser.js:116:10)
    at Parser.parse (/bundle/bundle/programs/server/npm/node_modules/katex/src/Parser.js:105:22)
    at parseTree (/bundle/bundle/programs/server/npm/node_modules/katex/src/parseTree.js:14:19)
    at Object.renderToString (/bundle/bundle/programs/server/npm/node_modules/katex/katex.js:52:16)

How can I fix it ?

Thank in advance

[kevinbarabash]

@jbg77 we don't support \overrightarrow. Can you post the rest of the TeX code that you're trying to parse?

[kevinbarabash]

@jbg77 you might be interested in #524.

[jbg77]

I will look that

The code is simply \frac{\partial V}{\partial r} < 0
And what about the support of char like: é, è etc
Thank you by the way :)

Edit: same problem with &̲nbsp;and ' ' (space), and it's why < or > doesn't work, because they are html entities

[gagern]

If your input to KaTeX contains HTML entities, you have to either change the way you obtain that input so that they don't get escaped or you read them from the DOM after they have been handled. Or you have to add a string rewrite step of your own to undo the html entity escaping. This is essentially outside the core of KaTeX, but depends on the glue you use to feed KaTeX its input.

[kevinbarabash]

Support for é, è, etc is on master. For < and > use \lt and \gt. @jbg77 in the title of this issue you mentioned superior/inferior, are you referring to \sup and \inf?

[kevinbarabash]

Support for \overrightarrow was added in v0.8.0.