Image alt tag header formatting #1320
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st0012
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Mar 20, 2025
tompng
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Mar 20, 2025
| { | ||
| # Extract alt text and URL | ||
| alt_text = a[/\{(.*?)\}/, 1] || "" | ||
| url = a[/\[(.*?)\]/, 1] || "" |
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a is a String that always match to these regexp because ExplicitLink:a is created by "{#{l}}[#{s}]".
Perhaps it could be more simple if ExplicitLink returns structured data
ExplicitLink = Label:l "(" @Sp Source:s Spnl Title @Sp ")"
- { "{#{l}}[#{s}]" } # returns string, need to parse this string again...
+ { { label: l, source: s } } # can return hash(need to change Link = ExplicitLink | ReferenceLink | AutoLink to return a string if ExplicitLink returns hash)
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Could we do this in a follow-up PR? I think it's out of scope for this PR.
tompng
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Mar 20, 2025
Co-authored-by: Stan Lo <stan001212@gmail.com>
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Thanks everyone! |
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This allows us to parse the alt text from Markdown images, formatting a header text correctly (using the alt text).
Without this PR, if a Markdown file has an image instead of a title, that image will be used in the table of contents, which is unreadable and undesirable.
Used in rack/rack#2313.