zed-unicode

Add completion to unicode characters in Zed. It completes by default the mathematical symbols, the arrows, the greek letters.

It's very simple to use, you can just type -> which transforms into → and ->> into ↠.

Settings

Configure the language server in your settings.json:

{
  "lsp": {
    "unicode": {
      "settings": {
        "include_all_symbols": false,
        "prefix": ""
      }
    }
  }
}

• include_all_symbols — when true, pulls in a trigger for (almost) every named Unicode character, not just the curated math/arrow/Greek set.

• prefix — require this string before a snippet's trigger word to complete, e.g. "u" means you need to type ulambda instead of bare lambda. Empty (the default) requires no prefix, matching the classic behavior.

  Use an alphanumeric prefix, not punctuation. Zed's own completion popup computes its filter query using only "word" characters immediately before the cursor (independent of the language server), so a punctuation prefix like \ gets excluded from what Zed searches for even though the language server handles it correctly — the popup just won't show the match. A letter or digit prefix doesn't have this problem.

Pointing at a local build (development)

To test a locally built unicode-ls instead of the one downloaded from GitHub releases, use Zed's built-in binary override — do not need any custom setting for this:

{
  "lsp": {
    "unicode": {
      "binary": {
        "path": "/absolute/path/to/unicode-ls",
        "arguments": ["--prefix", "u"]
      }
    }
  }
}

Note: once you set binary.path, Zed builds the launch command directly from binary.path/binary.arguments and does not consult settings.include_all_symbols or settings.prefix at all — pass any flags you need explicitly via arguments in that case.