forked from mirrors/org-mode
ox-html.el: Use CUSTOM_ID for outline-container-* div id
* lisp/ox-html.el (org-html-headline): When CUSTOM_ID is set, use it to set the outline-container-* <div> id. TINYCHANGE When exporting HTML the exporter generate ids for references. Unfortunately those id are not stable in the sense that exporting twice generate two different set of ids. Using CUSTOM_ID one could already use have fixed anchors in the generated HTML. So for example we could share URL with ...index.html#my-section-id and it will be the same URL even if we export the HTML again. Unfortunately, this CUSTOM_ID is not used for the outline ids. And thus if we expose the html in a git repository for example. Each export will generate a big diff that "pollute" the diff because it will show changes for all org items while most of them could still be unchanged. With this PR, HTML export will use CUSTOM_ID for both the headers id and the org outline ids. For Items without CUSTOM_ID the behavior will stay identical as before.
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@ -2578,8 +2578,7 @@ holding contextual information."
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(first-content (car (org-element-contents headline))))
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(format "<%s id=\"%s\" class=\"%s\">%s%s</%s>\n"
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(org-html--container headline info)
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(concat "outline-container-"
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(org-export-get-reference headline info))
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(format "outline-container-%s" id)
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(concat (format "outline-%d" level)
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(and extra-class " ")
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extra-class)
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