* Lua Filter: Change image alt= attribute
@ 2023-04-28 15:24 ThomasH
[not found] ` <0c93ede7-c24c-4a7f-ab8f-1b6b0d6aa7c1n-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: ThomasH @ 2023-04-28 15:24 UTC (permalink / raw)
To: pandoc-discuss
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I want to change the alt= attribute of an image during translation. This is
my Lua filter:
*function Image(elem) nelem = elem:clone() nelem.attributes.alt =
'image' return nelemend*
It doesn't work, though. With HTML like
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
</head>
<body>
See image: <img src="foo.jpg" alt="foobar"/>
</body>
</html>
I get an AST like this
[ Plain
[ Str "See"
, Space
, Str "image:"
, Space
, Image
( "" , [] , [ ( "alt" , "image" ) ] )
[ Str "foobar" ]
( "foo.jpg" , "" )
]
]
I'm not sure how to interprete the Image part, though. The Markdown output
is:
See image: {alt="image"}
which shows that the original alt text is retained, and the intended
replacement text is just added as if an arbitrary attribute.
What is wrong with my filter?
Thanks, T.
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* Re: Lua Filter: Change image alt= attribute
[not found] ` <0c93ede7-c24c-4a7f-ab8f-1b6b0d6aa7c1n-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
@ 2023-04-28 20:58 ` BPJ
[not found] ` <CADAJKhD1xpL-Re2M8tUQq8DiZNM=dXNw8tQ=iqWEqrm57g_nzQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: BPJ @ 2023-04-28 20:58 UTC (permalink / raw)
To: pandoc-discuss
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You want `image.caption = 'image'`
Den fre 28 apr. 2023 17:25ThomasH <therch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:
> I want to change the alt= attribute of an image during translation. This
> is my Lua filter:
>
>
>
>
>
> *function Image(elem) nelem = elem:clone() nelem.attributes.alt =
> 'image' return nelemend*
>
> It doesn't work, though. With HTML like
>
> <?xml version="1.0" encoding="utf-8" ?>
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
> http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
> <html>
> <head>
> </head>
> <body>
> See image: <img src="foo.jpg" alt="foobar"/>
> </body>
> </html>
>
> I get an AST like this
>
> [ Plain
> [ Str "See"
> , Space
> , Str "image:"
> , Space
> , Image
> ( "" , [] , [ ( "alt" , "image" ) ] )
> [ Str "foobar" ]
> ( "foo.jpg" , "" )
> ]
> ]
>
> I'm not sure how to interprete the Image part, though. The Markdown output
> is:
>
> See image: {alt="image"}
>
> which shows that the original alt text is retained, and the intended
> replacement text is just added as if an arbitrary attribute.
>
> What is wrong with my filter?
>
> Thanks, T.
>
> --
> 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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> https://groups.google.com/d/msgid/pandoc-discuss/0c93ede7-c24c-4a7f-ab8f-1b6b0d6aa7c1n%40googlegroups.com
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> .
>
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* Re: Lua Filter: Change image alt= attribute
[not found] ` <CADAJKhD1xpL-Re2M8tUQq8DiZNM=dXNw8tQ=iqWEqrm57g_nzQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2023-04-29 16:32 ` ThomasH
0 siblings, 0 replies; 3+ messages in thread
From: ThomasH @ 2023-04-29 16:32 UTC (permalink / raw)
To: pandoc-discuss
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Great, that did it!
T.
On Friday, April 28, 2023 at 10:58:23 PM UTC+2 BPJ wrote:
> You want `image.caption = 'image'`
>
> Den fre 28 apr. 2023 17:25ThomasH <the...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:
>
>> I want to change the alt= attribute of an image during translation. This
>> is my Lua filter:
>>
>>
>>
>>
>>
>> *function Image(elem) nelem = elem:clone() nelem.attributes.alt =
>> 'image' return nelemend*
>>
>> It doesn't work, though. With HTML like
>>
>> <?xml version="1.0" encoding="utf-8" ?>
>> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
>> http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
>> <html>
>> <head>
>> </head>
>> <body>
>> See image: <img src="foo.jpg" alt="foobar"/>
>> </body>
>> </html>
>>
>> I get an AST like this
>>
>> [ Plain
>> [ Str "See"
>> , Space
>> , Str "image:"
>> , Space
>> , Image
>> ( "" , [] , [ ( "alt" , "image" ) ] )
>> [ Str "foobar" ]
>> ( "foo.jpg" , "" )
>> ]
>> ]
>>
>> I'm not sure how to interprete the Image part, though. The Markdown
>> output is:
>>
>> See image: {alt="image"}
>>
>> which shows that the original alt text is retained, and the intended
>> replacement text is just added as if an arbitrary attribute.
>>
>> What is wrong with my filter?
>>
>> Thanks, T.
>>
>> --
>> 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-discus...-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/pandoc-discuss/0c93ede7-c24c-4a7f-ab8f-1b6b0d6aa7c1n%40googlegroups.com
>> <https://groups.google.com/d/msgid/pandoc-discuss/0c93ede7-c24c-4a7f-ab8f-1b6b0d6aa7c1n%40googlegroups.com?utm_medium=email&utm_source=footer>
>> .
>>
>
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2023-04-28 15:24 Lua Filter: Change image alt= attribute ThomasH
[not found] ` <0c93ede7-c24c-4a7f-ab8f-1b6b0d6aa7c1n-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
2023-04-28 20:58 ` BPJ
[not found] ` <CADAJKhD1xpL-Re2M8tUQq8DiZNM=dXNw8tQ=iqWEqrm57g_nzQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2023-04-29 16:32 ` ThomasH
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