improve coat

Author: oldratlee

coat

@@ -13,6 +13,10 @@
 set -e
 set -o pipefail
 
+# if not in console, use cat directly
+#   check isatty in bash https://stackoverflow.com/questions/10022323
+[ ! -t 1 ] && exec cat "$@"
+
 # NOTE: $'foo' is the escape sequence syntax of bash
 readonly ec=$'\033' # escape char
 readonly eend=$'\033[0m' # escape end
@@ -21,9 +25,7 @@ readonly -a ECHO_COLORS=(31 32 37 34 33 35 36)
 COUNT=0
 colorEcho() {
     local color="${ECHO_COLORS[COUNT++ % ${#ECHO_COLORS[@]}]}"
-    # check isatty in bash https://stackoverflow.com/questions/10022323
-    # if stdout is console, turn on color output.
-    [ -t 1 ] && echo "$ec[1;${color}m$@$eend" || echo "$@"
+    echo "$ec[1;${color}m$@$eend"
 }
 
 # Bash read line does not read leading spaces https://stackoverflow.com/questions/29689172