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feat: install host terminfo inside the VM on $TERM change #12

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Merged
sylvinus merged 1 commit into from
May 26, 2026
Merged

feat: install host terminfo inside the VM on $TERM change #12

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17 changes: 17 additions & 0 deletions agent-vm.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -88,6 +88,7 @@ _agent_vm_ensure_running() {
limactl stop "$vm_name" &>/dev/null
limactl delete "$vm_name" --force &>/dev/null
rm -f "$AGENT_VM_STATE_DIR/.agent-vm-version-${vm_name}"
rm -f "$AGENT_VM_STATE_DIR/.agent-vm-term-${vm_name}"
fi

if ! _agent_vm_exists "$vm_name"; then
Expand Down Expand Up @@ -157,6 +158,20 @@ _agent_vm_ensure_running() {
limactl start "$vm_name" &>/dev/null
fi

# Install the host's terminfo entry inside the VM so non-standard terminals
# (xterm-ghostty, xterm-kitty, …) work correctly. Without this, zsh/ZLE
# can't decode keys → broken backspace, arrows, etc. Cached per-VM so we only
# pay the limactl shell roundtrip when $TERM actually changes.
local term_cache="$AGENT_VM_STATE_DIR/.agent-vm-term-${vm_name}"
if [[ -n "${TERM:-}" ]] && [[ "$(cat "$term_cache" 2>/dev/null)" != "$TERM" ]] \
&& infocmp -x "$TERM" &>/dev/null; then
if infocmp -x "$TERM" | limactl shell "$vm_name" sudo tic -x - &>/dev/null; then
echo "$TERM" > "$term_cache"
else
echo "Warning: failed to install '$TERM' terminfo inside VM." >&2
fi
fi

# Run per-user runtime script if it exists
if [ -f "$AGENT_VM_STATE_DIR/runtime.sh" ]; then
echo "Running user runtime setup..."
Expand Down Expand Up @@ -632,6 +647,7 @@ _agent_vm_destroy() {
limactl stop "$vm_name" &>/dev/null
limactl delete "$vm_name" --force &>/dev/null
rm -f "$AGENT_VM_STATE_DIR/.agent-vm-version-${vm_name}"
rm -f "$AGENT_VM_STATE_DIR/.agent-vm-term-${vm_name}"
echo "VM destroyed."
}

Expand All @@ -656,6 +672,7 @@ _agent_vm_destroy_all() {
limactl stop "$vm" &>/dev/null
limactl delete "$vm" --force &>/dev/null
rm -f "$AGENT_VM_STATE_DIR/.agent-vm-version-${vm}"
rm -f "$AGENT_VM_STATE_DIR/.agent-vm-term-${vm}"
done
echo "All VMs destroyed."
}
Expand Down