• AngryCommieKender@lemmy.world
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          3 months ago

          I just checked it on Sync for Lemmy, and it showed as a blue block till I clicked it. I’m using a Galaxy S10e. It does show two instances of the word “spoiler” at the beginning of the text, but that’s just something Sync does. Works fine elsewhere.

        • maccentric@sh.itjust.works
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          3 months ago

          I don’t have Sync but I fired up Mlem and Avelon and they both also botched the spoiler tag. It doesn’t appear like it should be too hard to implement, wonder what’s going on?

          • AngryCommieKender@lemmy.world
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            3 months ago

            This right here is why I love you guys. Someone posted a bug, and we already have two people testing said bug, and giving reports within 30 minutes of the bug report.

            Never change Lemmy :)

          • Sjmarf@lemmy.ml
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            3 months ago

            Mlem dev here! Lemmy has a custom “flavor” of Markdown that is distinct from other social media platforms. Open-source markdown parsers and renderers exist for popular flavors of Markdown (e.g GitHub-flavor), but not for Lemmy-flavor. Most Lemmy clients choose to use an existing GitHub-flavor parser that is close enough to Lemmy’s to be indistinguishable in most cases. Mlem uses swift-markdown-ui to render markdown, which uses cmark-gfm as its parser.

            Lemmy’s spoiler format is unique to Lemmy-flavor markdown, so that’s one of the places where use of a third-party markdown parser is noticed by users. Other common parsing errors are subscript and footnotes.

            Adding spoiler support is not particularly easy, unfortunately. You can’t really apply spoiler-parsing logic on-top of another markdown parser - it has to be integrated into the parser itself. This is because the app needs to ignore spoiler markdown in certain situations, such as inside of a code block. The only good option is to write a custom markdown parser from scratch, or modify an existing markdown parser to support Lemmy’s markdown dialect. Both options can be difficult for developers for several reasons:

            • cmark-gfm is written in C, which the developer of the Lemmy client may not be familiar with.
            • If the app is using a third-party renderer, and not just a parser, that renderer also needs to be rewritten to support the new parsing logic.

            This takes a significant amount of time for comparatively little value for users, so most client developers didn’t prioritise it.

            In an upcoming Mlem version, we’re replacing our markdown parser renderer with a custom one that can render spoilers and subscripts, but we’ve got a way to go before we achieve full parity with Lemmy. If any developers of other apps are using cmark-gfm, you’re welcome to use our code from that repo under the terms of the licence.

            Sorry this is kinda long, I hope this answers your question