David KayaandCopilot c7910e6e4b fix: remove streaming text boundary heuristics that injected spurious spaces ...

The StreamingTextMerger (C#) and mergeStreamingText (TypeScript) contained
custom word-boundary heuristics that inserted spaces between streaming deltas
based on incorrect assumptions. Two bugs caused mid-word spaces:

1. Unconditional space insertion when incoming delta started with uppercase or
   digit characters, breaking acronyms (MDA -> M DA, UAG -> UA G)
2. LooksLikeWordBoundary using global token counts that fired on nearly every
   mid-word token split (writable -> wr itable, fragile -> frag ile)

Both upstream projects (Copilot SDK and Agent Framework) use simple string
concatenation for delta accumulation. LLM streaming tokens natively include
whitespace when needed, so no boundary detection is required.

Removed all boundary heuristic methods and replaced with plain concatenation.
Kept overlap detection and snapshot handling for event redelivery scenarios.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

2026-04-15 18:55:34 +02:00

..

main

feat: show sub-workflow agents and lifecycle in the Activity panel

2026-04-08 18:57:23 +02:00

renderer

fix: accurate elapsed timing and UX polish for activity panel

2026-04-15 09:11:38 +02:00

shared

fix: remove streaming text boundary heuristics that injected spurious spaces

2026-04-15 18:55:34 +02:00