1 files changed, 5 insertions, 5 deletions
diff --git a/tools/apply-colormap b/tools/apply-colormap
index dd35844..d59ddd2 100755
--- a/tools/apply-colormap
+++ b/tools/apply-colormap
@@ -73,13 +73,12 @@ colormap() {
 }
 
 palette() {
-    printf "palette"
-    sed "/^\\s*#/d; s/\\s*#.*//" <"$PALETTE" \
-        | sed -nr "1h;1!H; \${x; s/^\\s*/ /; s/\s+/ /g; p}"
+    { echo "palette"; sed "/^\\s*#/d; s/\\s*#.*//" <"$PALETTE"; } \
+        | sed -r ':a; $!N; s/\n/ /; ta; s/\s+/ /g'
 }
 
 serial_send() {
-    local fd
+    local fd x old_IFS="$IFS"
     exec {fd}<"$DEVICE_PATH"
     "$@" >"$DEVICE_PATH"
     while IFS= read -r -u "$fd" x; do
@@ -87,7 +86,8 @@ serial_send() {
         [ "$x" != "." ] || break
         printf "%s\\n" "$x"
     done
-    {fd}<&-
+    IFS="$old_IFS"
+    exec {fd}<&-
 }
 
 serial_send palette