{"repo":"NousResearch/hermes-agent","public_id":"116094","display_label":"LSP document sync broken by non-BMP characters","summary":"These issues and fixes address a bug where LSP incremental text synchronization produces stale or incorrect document state when the content contains non-BMP (multi-byte) Unicode characters, due to incorrect UTF-16 code unit handling in replacement ranges.","subsystem":null,"counts":{"members":3,"open_issues":0,"open_issues_distinct":0,"open_prs":0,"closed_issues":1,"merged_prs":1,"attempt_prs":1},"landed_fix":{"status":"merged_to_main","basis":"structural","pr":116790,"merged_at":"2026-09-20T17:24:18+00:00"},"resolution":{"state":"resolved","by":"pr-116790"},"freshness":{"state":"verified","last_verified_at":"2026-09-20T17:24:18+00:00","is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":0.6666666666666666},"fix_edges":[{"issue_number":116094,"pr_number":116790,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-09-20T17:24:18+00:00"}],"members":[{"kind":"issue","number":116094,"title":"bug(lsp): incremental replacements leave stale text after non-BMP characters","url":null,"state":"closed"},{"kind":"pr","number":116097,"title":"fix(lsp): use UTF-16 units for document replacement ranges","url":null,"state":"closed","close_reason":{"refs":[{"kind":"commit","value":"d23d6e821876","number":0},{"kind":"pr","value":"#116790","number":116790},{"kind":"pr","value":"#116094","number":116094},{"kind":"pr","value":"#116097","number":116097}],"category":"merged_via","implication":"superseded"},"merged":false},{"kind":"pr","number":116790,"title":"fix(lsp): incremental servers keep an exact document mirror after non-BMP characters (#116094, salvage #116097)","url":null,"state":"merged","close_reason":{"category":"merged"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["agent/lsp/client.py","tests/agent/lsp/_mock_lsp_server.py","tests/agent/lsp/test_incremental_unicode.py"]}],"trust":{"default_tier":"verified","includes_suggested":false}}