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On Spanish Language Stack Exchange we have an [españa] tag. It is correctly displayed in the list of questions tagged [españa]:

tag search

but not when searching for keywords, where it shows as [espa#a]:

search using keywords

The link to the tag also leads to nowhere.

Another example is [vocabulario-técnico] where the 'é' gets dropped entirely: [vocabulario-tcnico].

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    Possibly related ("é" in that case, an acute accent one, like ó mentioned in the answer): Why do I have numbers in my username when I logged in to SEDE? Oct 6, 2022 at 13:37
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    Summary of the issue (mostly so I can copy/paste it when I send it to the devs): Certain special characters in tag names are not displaying properly on search results pages (on any site where there are such tag names); this also affects the URLs the tag names link to. Affected characters: é and à (they vanish entirely – causing the [à] tag on French to disappear completely in search results), ç (it becomes +), and ñ (it becomes #). Unaffected: á, ã, â, ê, í, ó, õ, ô, ú, ü.
    – V2Blast
    Oct 6, 2022 at 18:23

1 Answer 1

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The ó seems to be working. I just tested searches with the same diacritics on Portuguese Language Stack Exchange and they seem to be working. However, on Stack Overflow em Português the ç C-cedilha is currently showing the same problem.

enter image description here

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    ...Looking at the first link in your answer, it looks like there are issues with tags containing some special characters even there. The first tag displays correctly as selección-de-palabras below the search result. However, the other 3 tags are displayed as solicitud-de-trmino, vocabulario-tcnico, and identificación-de-trmino – it looks like the é character isn't being displayed there at all (and the links are similarly broken as a result).
    – V2Blast
    Oct 6, 2022 at 17:33
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    Those tags should be getting displayed as solicitud-de-término, vocabulario-técnico, and identificación-de-término (and if you click on the question, they do appear properly there). So it looks like it's only affecting the search results, not the question pages themselves. And I guess it might only be affecting some special characters but not others...
    – V2Blast
    Oct 6, 2022 at 17:35
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    Continuing to test: It looks like ú, í, and ü are displaying fine as well, per this search. And so is á; see here. So far, it looks like é is vanishing entirely, ç is being turned into +, and ñ is being turned into #.
    – V2Blast
    Oct 6, 2022 at 17:39
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    @V2Blast I gave this some thought, and the problem is likely that the enconding isn't Unicode atm (somewhere in some layer)... If we look at the U0080 table all those chars are in the same range (unless SE uses combining characters, I don't know about that).
    – bad_coder
    Oct 6, 2022 at 17:45

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