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revert: replace fullwidth pipe ｜ with halfwidth | in DSML tool markup

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PR #460 introduced fullwidth pipe characters (｜) in DSML tool call formatting
to improve parsing robustness, but models exposed to these fullwidth pipes in
system prompts exhibit significantly higher rates of tool output hallucinations.
Reverting to halfwidth pipes (|) drastically reduces tokenizer/perplexity-driven
hallucinations while retaining the existing confusable-hardening in the parser.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
CJACK
2026-05-10 15:18:54 +08:00
parent 3beb31309f
commit cee8757d14
45 changed files with 725 additions and 342 deletions
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2
internal/httpapi/gemini/convert_messages_test.go
View File

@@ -89,7 +89,7 @@ func TestGeminiMessagesFromRequestPreservesThoughtOnFunctionCallHistory(t *testi
if !strings.Contains(prompt, "[reasoning_content]\nneed current state before answering\n[/reasoning_content]") {
t.Fatalf("expected thought in prompt history, got %q", prompt)
}
if !strings.Contains(prompt, `<｜DSML｜invoke name="search_web">`) {
if !strings.Contains(prompt, `<|DSML|invoke name="search_web">`) {
t.Fatalf("expected tool call in prompt history, got %q", prompt)
}
}

6
internal/httpapi/gemini/handler_test.go
View File

@@ -67,7 +67,11 @@ func (m *testGeminiDS) GetPow(_ context.Context, _ *auth.RequestAuth, _ int) (st
//nolint:unused // reserved test double for native Gemini DS-call path coverage.
func (m *testGeminiDS) UploadFile(_ context.Context, _ *auth.RequestAuth, req dsclient.UploadFileRequest, _ int) (*dsclient.UploadFileResult, error) {
m.uploadCalls = append(m.uploadCalls, req)
return &dsclient.UploadFileResult{ID: "file-gemini-history"}, nil
id := "file-gemini-history"
if len(m.uploadCalls) > 1 {
id = "file-gemini-tools"
}
return &dsclient.UploadFileResult{ID: id}, nil
}
//nolint:unused // reserved test double for native Gemini DS-call path coverage.