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[Bug] UnicodeEncodeError: 'latin-1' codec can't encode character '\u2019' #25

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[Bug] UnicodeEncodeError: 'latin-1' codec can't encode character '\u2019'#25
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@Tiritibambix
Tiritibambix
opened on May 16, 2026

Hey, another small bug to report.

Some files with a typographic apostrophe (', U+2019) in their filename fail with this error:

UnicodeEncodeError: 'latin-1' codec can't encode character '\u2019' in position 56: ordinal not in range(256)

Example filename: SEO - 3.3 - Les bases techniques d'écriture.mp4

Accented characters seem to be handled fine, so it looks like the issue is specifically with the curly apostrophe (') as opposed to the straight one ('). Somewhere in the code a string is being encoded as latin-1 instead of utf-8.

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  1. Tiritibambix
    added
    bugSomething isn't working
    on May 16, 2026

  2. Tiritibambix commented on May 16, 2026

    @Tiritibambix
    Tiritibambix
    on May 16, 2026
    Author

    The issue is in backend/api/routes/library.py . The three Content-Disposition headers use filename="..." which HTTP encodes as latin-1, so anything outside that range blows up.

    Fix is to switch to RFC 5987 syntax:

    from urllib.parse import quote
# ...
headers={"Content-Disposition": f"attachment; filename*=UTF-8''{quote(filename, safe='')}.md"}

  3. sim186 commented on May 16, 2026

    @sim186
    sim186
    on May 16, 2026
    Owner

    Should be solved by the latest commit.

  4. sim186
    added a commit that references this issue on May 16, 2026

    feat: #25 implement content disposition helper and update export endp…

    50f7577

  5. Tiritibambix commented on May 17, 2026

    @Tiritibambix
    Tiritibambix
    on May 17, 2026
    Author

    Thanks for the quick fix :)

  6. Tiritibambix
    closed this as completedon May 17, 2026
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