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fix(cli): catch KeyboardInterrupt during slash commands to prevent session exit

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A Ctrl+C during a slow slash command (e.g. /skills browse on a large
skill tree, /sessions list against a multi-GB SQLite DB) used to unwind
past self.process_command() to the outer prompt_toolkit event loop,
which killed the entire session — losing all conversation state.

Fix: wrap the slash-command dispatch in try/except KeyboardInterrupt
so Ctrl+C aborts the command but the prompt loop continues. Other
exceptions still propagate so real bugs aren't silently swallowed.

Surgical reapply of PR #5189. Original branch was many months stale
(3764 files / 1M+ LOC of unrelated reverts); the substantive ~6 LOC
change in cli.py was reapplied by hand onto current main with the
contributor's authorship preserved via --author.
This commit is contained in:
ygd58 2026-05-25 03:53:52 -07:00 • committed by Teknium
parent ee7789e547
commit 63d6b9e637
1 changed files with 13 additions and 5 deletions
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18
cli.py
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@ -14235,11 +14235,19 @@ class HermesCLI:
if not _file_drop and isinstance(user_input, str) and _looks_like_slash_command(user_input):
_cprint(f"\n⚙️ {user_input}")
if not self.process_command(user_input):
self._should_exit = True
# Schedule app exit
if app.is_running:
app.exit()
try:
if not self.process_command(user_input):
self._should_exit = True
# Schedule app exit
if app.is_running:
app.exit()
except KeyboardInterrupt:
# Ctrl+C during a slow slash command (e.g. /skills browse,
# /sessions list with a large DB) should interrupt the
# command and return to the prompt, NOT exit the entire
# session. Without this guard a KeyboardInterrupt unwinds
# to the outer prompt_toolkit loop and the session dies.
_cprint("\n[dim]Command interrupted.[/dim]")
continue
# Expand paste references back to full content