[#1453] solve declare-before-use in add-config-h

diff --git a/tools/add-config-h.sh b/tools/add-config-h.sh
index 7889c2816f26a95ff76583be6fabe324b490223b..2276f2df2d50ff880056aa38276b38ae06aabfef 100755 (executable)
--- a/tools/add-config-h.sh
+++ b/tools/add-config-h.sh
@@ -31,6 +31,15 @@ Options:
     "$(basename "${0}")"
 }
 
+# Define some ANSI color codes.
+if test -t 1; then
+  red='\033[91m'
+  reset='\033[0m'
+else
+  red=
+  reset=
+fi
+
 # Parse parameters.
 while test ${#} -gt 0; do
   case "${1}" in
@@ -55,10 +64,6 @@ test -z "${name_only+x}" && name_only=false
 # Get root path.
 root_path=$(cd "$(dirname "${0}")/.." && pwd)
 
-# Define some ANSI color codes.
-red='\e[1m\e[31m'
-reset='\e[1m\e[0m'
-
 # Get source files that are missing an '#include <config.h>' line.
 get_source_files() {
   mandatory_commands cut find grep sed sort uniq