From 0604aef3ee79e58d8098cc86d48674d6941abe8b Mon Sep 17 00:00:00 2001
From: Wyatt Walter <wyatt@appsmith.com>
Date: Thu, 25 Jun 2026 03:21:02 +0000
Subject: [PATCH] fix(supervision): treat NBSP as whitespace in composer
 detection
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The claude composer pads its prompt with a non-breaking space (U+00A0),
which POSIX [:space:] does not match. An idle "❯<NBSP>" prompt therefore
survived the trim in fm_tmux_composer_state, never matched the bare-prompt
"empty" case, and classified as pending input. This wedged the away-mode
daemon (the composer guard deferred every escalation) and tripped fm-send's
swallowed-Enter check on every idle pane. Normalize U+00A0 to a space
before trimming.
---
 bin/fm-tmux-lib.sh | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/bin/fm-tmux-lib.sh b/bin/fm-tmux-lib.sh
index 374e358..c256ce6 100755
--- a/bin/fm-tmux-lib.sh
+++ b/bin/fm-tmux-lib.sh
@@ -127,6 +127,13 @@ fm_tmux_composer_state() {  # <target> -> empty|pending|unknown
   stripped=${line//│/}      # U+2502 light vertical (claude)
   stripped=${stripped//┃/}  # U+2503 heavy vertical
   stripped=${stripped//|/}  # ASCII pipe
+  # Normalize the non-breaking space (U+00A0) the claude composer pads its prompt
+  # with into an ASCII space. The trim below uses POSIX [:space:], which does NOT
+  # match U+00A0, so without this an idle "❯<NBSP>" prompt survives the trim, never
+  # matches the bare-prompt "empty" case, and reads as pending input — wedging the
+  # away-mode daemon (it deferred 100% of escalations) and tripping fm-send's
+  # swallowed-Enter check on every idle pane.
+  stripped=${stripped//$'\xc2\xa0'/ }  # U+00A0 NBSP -> ASCII space
   # Trim surrounding whitespace.
   stripped="${stripped#"${stripped%%[![:space:]]*}"}"
   stripped="${stripped%"${stripped##*[![:space:]]}"}"