custom-style has offset while writing docx file

[gaiyinaizhi]

Explain the problem.

• command:

pandoc /Users/xx.html \
 -f html+tex_math_dollars --reference-doc /Users/xx/template.docx \
 --resource-path /Users/xx/output \
 -L /Users/xx/pagebreak.lua \
 -o /Users/xx.docx -s\
 --log /Users/xx.log

• problem
  the custom-style has offset while convert html to docx,
  example html:

... skip outer html tag
<h2>hello sample h2 by default</h2>
<h2 custom-style="heading 2 center">hello sample h2 for center alignment</h2>
<p custom-style="Body Text center">body text for center alignment</p>
<div class="pagebreak page_0"></div> <!-- this is a pagebreak tag -->

example styles.xml in template.docx

	<w:style w:styleId="5" w:type="paragraph">
		<w:name w:val="heading 2"/>
		<w:basedOn w:val="1"/>
		<w:next w:val="3"/>
		<w:unhideWhenUsed/>
		<w:qFormat/>
		<w:uiPriority w:val="9"/>
		<w:pPr>
			<w:keepNext/>
			<w:keepLines/>
			<w:spacing w:before="300"/>
			<w:outlineLvl w:val="1"/>
		</w:pPr>
		<w:rPr>
			<w:rFonts w:cstheme="majorBidi" />
			<w:b/>
			<w:bCs/>
			<w:sz w:val="32"/>
			<w:szCs w:val="32"/>
		</w:rPr>
	</w:style>
	<w:style w:customStyle="1" w:styleId="78" w:type="paragraph">
		<w:name w:val="heading 2 center"/>
		<w:basedOn w:val="5"/>
		<w:qFormat/>
		<w:uiPriority w:val="0"/>
		<w:pPr>
			<w:jc w:val="center"/>
		</w:pPr>
	</w:style>
	<w:style w:customStyle="1" w:styleId="80" w:type="paragraph">
		<w:name w:val="Body Text center"/>
		<w:basedOn w:val="3"/>
		<w:qFormat/>
		<w:uiPriority w:val="0"/>
		<w:pPr>
			<w:jc w:val="center"/>
		</w:pPr>
	</w:style>

final result in document.xml, hello sample h2 for center alignment styleId should be 78 while the text body text for center alignment should be 80

   <w:bookmarkStart w:id="20" w:name="hello-sample-h2-by-default" />
    <w:p><w:pPr><w:pStyle w:val="5" /></w:pPr><w:r><w:t xml:space="preserve">hello sample h2 by default</w:t></w:r></w:p>
    <w:bookmarkEnd w:id="20" />
    <w:bookmarkStart w:id="21" w:name="hello-sample-h2-for-center-alignment" />
    <w:p><w:pPr><w:pStyle **w:val="5"** /></w:pPr><w:r><w:t xml:space="preserve">hello sample h2 for center alignment</w:t></w:r></w:p>
    <w:p><w:pPr><w:pStyle **w:val="78"** /></w:pPr><w:r><w:t xml:space="preserve">body text for center alignment</w:t></w:r></w:p>

Pandoc version?
system: MacOS
pandoc 3.6.4
Features: +server +lua
Scripting engine: Lua 5.4

[jgm]

Can you upload the template.docx you are using, so I can try to reproduce this?

[gaiyinaizhi]

template.docx @jgm

[jgm]

A preliminary observation:

% pandoc -f html -t native
<h2>hello sample h2 by default</h2>
<h2 custom-style="heading 2 center">hello sample h2 for center alignment</h2>
<p custom-style="Body Text center">body text for center alignment</p>
^D
[ Header
    2
    ( "hello-sample-h2-by-default" , [] , [] )
    [ Str "hello"
    , Space
    , Str "sample"
    , Space
    , Str "h2"
    , Space
    , Str "by"
    , Space
    , Str "default"
    ]
, Header
    2
    ( "hello-sample-h2-for-center-alignment"
    , []
    , [ ( "custom-style" , "heading 2 center" ) ]
    )
    [ Str "hello"
    , Space
    , Str "sample"
    , Space
    , Str "h2"
    , Space
    , Str "for"
    , Space
    , Str "center"
    , Space
    , Str "alignment"
    ]
, Para
    [ Str "body"
    , Space
    , Str "text"
    , Space
    , Str "for"
    , Space
    , Str "center"
    , Space
    , Str "alignment"
    ]
]

Note that the custom-style attribute on the p element is not parsed; this is because Para in pandoc doesn't have a slot for attributes. (You could try using an enclosing div instead.)

But I can confirm that there is some kind of bug here; here's the trace of the function getStyleIdFromName:

ParaStyleName (CIString "Heading 2")
ParaStyleId "5"
ParaStyleName (CIString "Heading 2")
ParaStyleId "5"
ParaStyleName (CIString "heading 2 center")
ParaStyleId "78"

The second block ought to be getting "heading 2 center".