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fix(stringutil): operate on runes instead of bytes in Truncate (#22388)

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Fixes https://github.com/coder/coder/issues/22375

Updates `stringutil.Truncate` to properly handle multi-byte UTF-8
characters.
Adds tests for multi-byte truncation with word boundary.

Created by Mux using Opus 4.6
This commit is contained in:
Cian Johnston
2026-02-27 17:46:37 +00:00
committed by GitHub
parent 0252205374
commit 0cfa03718e
4 changed files with 69 additions and 12 deletions
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coderd/taskname/taskname_test.go
+13
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@@ -49,6 +49,19 @@ func TestGenerate(t *testing.T) {
require.NotEmpty(t, taskName.DisplayName)
})
t.Run("FromPromptMultiByte", func(t *testing.T) {
t.Setenv("ANTHROPIC_API_KEY", "")
ctx := testutil.Context(t, testutil.WaitShort)
taskName := taskname.Generate(ctx, testutil.Logger(t), "über cool feature")
require.NoError(t, codersdk.NameValid(taskName.Name))
require.True(t, len(taskName.DisplayName) > 0)
// The display name must start with "Ü", not corrupted bytes.
require.Equal(t, "Über cool feature", taskName.DisplayName)
})
t.Run("Fallback", func(t *testing.T) {
// Ensure no API key
t.Setenv("ANTHROPIC_API_KEY", "")