Cysharp / Cysharp/ZString

Add string syntax attribute to `.AppendFormat()`

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Dominant language
C#
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Description

Using [StringSyntax] attribute like so:

public void AppendFormat<T1>([StringSyntax(StringSyntaxAttribute.CompositeFormat)]string format, T1 arg1)

would make it so that IDEs can provide better syntax highlighting:

Image

Docs: https://learn.microsoft.com/en-us/dotnet/api/system.diagnostics.codeanalysis.stringsyntaxattribute?view=net-10.0

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the AppendFormat overloads in the ZString source and review how their format parameter is declared. Apply the StringSyntax attribute with the CompositeFormat value to the relevant format parameter, then verify that the public API builds and the IDE can recognize the format string.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
api
Issue type
Feature
Difficulty
1/5
Estimated time
Under an hour
Activity status
Quiet
Clarity
Clearly specified
Newbie friendliness
68/100

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