Problem When Transcribing Greek HTML Letters to LaTex

Problem When Transcribing Greek HTML Letters to LaTex

[totyped-Re5JQEeQqe8AvxtiuMwx3w]

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I have also posted this issue on stackoverflow 
: https://stackoverflow.com/q/55642183/6114310

I have the following HTML string:
    s = "I have : <i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i>"

Now, I would like to convert it to LaTex. To do so, I am using 
[pypandoc][1]. 

    import pypandoc
    text = pypandoc.convert_text(s,'latex', format = "html", extra_args = 
['--wrap=preserve'] )
    text

I get:
    I have : \emph{1,w\textgreater{} + 2,w\textgreater{}}\r\n

Which in human-readable LaTex become:

[image: Capture.JPG]


[![enter image description here][2]][2]

**Anyone knows how to fix it ?** 

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Re: Problem When Transcribing Greek HTML Letters to LaTex

[John MacFarlane]

The main issue is that this isn't really valid HTML.  The
'<' should be escaped as '&lt;'.

When you fix that it gives better results:

% pandoc -f html -t latex
&lt;λv<sub>1</sub>,w&gt; + &lt;<sub>2</sub>,w
^D
\textless λv\textsubscript{1},w\textgreater{} + \textless{}\textsubscript{2},w



totyped-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org writes:

> I have also posted this issue on stackoverflow 
> : https://stackoverflow.com/q/55642183/6114310
>
> I have the following HTML string:
>     s = "I have : <i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i>"
>
> Now, I would like to convert it to LaTex. To do so, I am using 
> [pypandoc][1]. 
>
>     import pypandoc
>     text = pypandoc.convert_text(s,'latex', format = "html", extra_args = 
> ['--wrap=preserve'] )
>     text
>
> I get:
>     I have : \emph{1,w\textgreater{} + 2,w\textgreater{}}\r\n
>
> Which in human-readable LaTex become:
>
> [image: Capture.JPG]
>
>
> [![enter image description here][2]][2]
>
> **Anyone knows how to fix it ?** 
>
> -- 
> You received this message because you are subscribed to the Google Groups "pandoc-discuss" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
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> For more options, visit https://groups.google.com/d/optout.

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Re: Problem When Transcribing Greek HTML Letters to LaTex

[totyped-Re5JQEeQqe8AvxtiuMwx3w]

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I see, thank you very much for your help ! 
So, you replaced basically all `<`with `&lt`, correct ? 

Also: Do you understand, why, if you go on my Stackoverflow question 
https://stackoverflow.com/q/55642183/6114310, the string can be perfectly 
represented, if I just type it as is into Stackoverflow ? 


On Friday, April 12, 2019 at 2:04:38 AM UTC+2, John MacFarlane wrote:
>
>
> The main issue is that this isn't really valid HTML.  The 
> '<' should be escaped as '&lt;'. 
>
> When you fix that it gives better results: 
>
> % pandoc -f html -t latex 
> &lt;λv<sub>1</sub>,w&gt; + &lt;<sub>2</sub>,w 
> ^D 
> \textless λv\textsubscript{1},w\textgreater{} + 
> \textless{}\textsubscript{2},w 
>
>
>
> tot...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org <javascript:> writes: 
>
> > I have also posted this issue on stackoverflow 
> > : https://stackoverflow.com/q/55642183/6114310 
> > 
> > I have the following HTML string: 
> >     s = "I have : <i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i>" 
> > 
> > Now, I would like to convert it to LaTex. To do so, I am using 
> > [pypandoc][1]. 
> > 
> >     import pypandoc 
> >     text = pypandoc.convert_text(s,'latex', format = "html", extra_args 
> = 
> > ['--wrap=preserve'] ) 
> >     text 
> > 
> > I get: 
> >     I have : \emph{1,w\textgreater{} + 2,w\textgreater{}}\r\n 
> > 
> > Which in human-readable LaTex become: 
> > 
> > [image: Capture.JPG] 
> > 
> > 
> > [![enter image description here][2]][2] 
> > 
> > **Anyone knows how to fix it ?** 
> > 
> > -- 
> > You received this message because you are subscribed to the Google 
> Groups "pandoc-discuss" group. 
> > To unsubscribe from this group and stop receiving emails from it, send 
> an email to pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org <javascript:>. 
> > To post to this group, send email to pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org 
> <javascript:>. 
> > To view this discussion on the web visit 
> https://groups.google.com/d/msgid/pandoc-discuss/4160d0dd-940f-405e-9ecb-0f1eca421b14%40googlegroups.com. 
>
> > For more options, visit https://groups.google.com/d/optout. 
>

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Re: Problem When Transcribing Greek HTML Letters to LaTex

[John MacFarlane]

totyped-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org writes:

> I see, thank you very much for your help ! 
> So, you replaced basically all `<`with `&lt`, correct ? 

All the < except the ones that are parts of HTML tags.

> Also: Do you understand, why, if you go on my Stackoverflow question 
> https://stackoverflow.com/q/55642183/6114310, the string can be perfectly 
> represented, if I just type it as is into Stackoverflow ? 

StackOverflow is parsing as Markdown, which allows raw HTML.
And it's more forgiving of invalid HTML, apparently,
than pandoc's HTML parser.

Interestingly, pandoc does the same thing. If you read
markdown, it allows this:

% pandoc -f markdown -t latex
<i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i>
\textless λv1,w\textgreater{} + \textless v2,w\textgreater{}

Here the emphasis disappears, though, because teh HTML
tag <i> is parsed as raw HTML which won't be passed
through to latex:

% pandoc -f markdown -t native
<i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i>
[Para [RawInline (Format "html") "<i>",Str "<\955v",RawInline (Format "html") "<sub>",Str "1",RawInline (Format "html") "</sub>",Str ",w>",Space,Str "+",Space,Str "<v",RawInline (Format "html") "<sub>",Str "2",RawInline (Format "html") "</sub>",Str ",w>",RawInline (Format "html") "</i>"]]

But if you read HTML, it doesn't like the unescaped <.

% pandoc -f html -t latex
\emph{1,w\textgreater{} + 2,w\textgreater{}}

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Re: Problem When Transcribing Greek HTML Letters to LaTex

[totyped-Re5JQEeQqe8AvxtiuMwx3w]

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Thanks a lot for your comments.
Interesting, if I do the same thing with pypandoc, it does not work:

s = "I have : <i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i>"
text = pypandoc.convert_text(s,'latex', format = "markdown", extra_args = 
['--wrap=preserve'] )

'I have : 1,w\\textgreater{} + 2,w\\textgreater{}\r\n'



On Friday, April 12, 2019 at 6:54:37 AM UTC+2, John MacFarlane wrote:
>
> tot...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org <javascript:> writes: 
>
> > I see, thank you very much for your help ! 
> > So, you replaced basically all `<`with `&lt`, correct ? 
>
> All the < except the ones that are parts of HTML tags. 
>
> > Also: Do you understand, why, if you go on my Stackoverflow question 
> > https://stackoverflow.com/q/55642183/6114310, the string can be 
> perfectly 
> > represented, if I just type it as is into Stackoverflow ? 
>
> StackOverflow is parsing as Markdown, which allows raw HTML. 
> And it's more forgiving of invalid HTML, apparently, 
> than pandoc's HTML parser. 
>
> Interestingly, pandoc does the same thing. If you read 
> markdown, it allows this: 
>
> % pandoc -f markdown -t latex 
> <i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i> 
> \textless λv1,w\textgreater{} + \textless v2,w\textgreater{} 
>
> Here the emphasis disappears, though, because teh HTML 
> tag <i> is parsed as raw HTML which won't be passed 
> through to latex: 
>
> % pandoc -f markdown -t native 
> <i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i> 
> [Para [RawInline (Format "html") "<i>",Str "<\955v",RawInline (Format 
> "html") "<sub>",Str "1",RawInline (Format "html") "</sub>",Str 
> ",w>",Space,Str "+",Space,Str "<v",RawInline (Format "html") "<sub>",Str 
> "2",RawInline (Format "html") "</sub>",Str ",w>",RawInline (Format "html") 
> "</i>"]] 
>
> But if you read HTML, it doesn't like the unescaped <. 
>
> % pandoc -f html -t latex 
> \emph{1,w\textgreater{} + 2,w\textgreater{}} 
>
>

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Re: Problem When Transcribing Greek HTML Letters to LaTex

[John MacFarlane]

totyped-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org writes:

> Thanks a lot for your comments.
> Interesting, if I do the same thing with pypandoc, it does not work:
>
> s = "I have : <i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i>"
> text = pypandoc.convert_text(s,'latex', format = "markdown", extra_args = 
> ['--wrap=preserve'] )
>
> 'I have : 1,w\\textgreater{} + 2,w\\textgreater{}\r\n'

What pandoc version?

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Re: Problem When Transcribing Greek HTML Letters to LaTex

[totyped-Re5JQEeQqe8AvxtiuMwx3w]

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pandoc 2.7.2
Compiled with pandoc-types 1.17.5.4, texmath 0.11.2.2, skylighting 0.7.7

On Friday, April 12, 2019 at 4:41:26 PM UTC+2, John MacFarlane wrote:
>
> tot...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org <javascript:> writes: 
>
> > Thanks a lot for your comments. 
> > Interesting, if I do the same thing with pypandoc, it does not work: 
> > 
> > s = "I have : <i><λv<sub>1</sub>,w> + <v<sub>2</sub>,w></i>" 
> > text = pypandoc.convert_text(s,'latex', format = "markdown", extra_args 
> = 
> > ['--wrap=preserve'] ) 
> > 
> > 'I have : 1,w\\textgreater{} + 2,w\\textgreater{}\r\n' 
>
> What pandoc version? 
>

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Re: Problem When Transcribing Greek HTML Letters to LaTex

[Kolen Cheung]

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Why in your last post you convert from markdown rather than html?

Also, try to work with pandoc directly first. Although pypandoc is pretty minimal, but people here only support pandoc.

Also try to produce MWE every time. If you didn’t provide a recipe that people can reproduce your result exactly, others can’t help you much. (And another reason not to use pypandoc but pandoc itself to report your problem, because you can’t assume everyone here uses pypandoc and has a set up readily available.)

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Re: Problem When Transcribing Greek HTML Letters to LaTex

[Joseph Reagle]

On 4/11/19 11:27 PM, totyped-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org wrote:
> So, you replaced basically all `<`with `&lt`, correct ?

Don't forget the semi-colon at the end.

Problem When Transcribing Greek HTML Letters to LaTex

[Kolen Cheung]

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How do you obtain that HTML to begins with? If you write it yourself then you should use LaTeX syntax to begin with, and then in HTML something like MathJax can render (most common syntaxes) them.

Also be careful that LaTeX (pdftex) doesn’t support Greek alphabets very well. If you want to type Unicode Greek alphabet then there’s a bunch of other things you need to know. The current best way is to stick with command like \alpha, etc.

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