🐛 Fix bash version check (#51)

The bash version check was performed before declaring the
emoji array, so an error message was displayed by bash
before printing the custom error message. I also changed
the exit code to 1 (error) in the case of an old bash version.

emojify

@@ -22,6 +22,15 @@
 
 emojify_version=2.1.0
 
+version_error_message="Oh my! That’s a very old version of bash you’re using, we don’t support that anymore :(
+Consider upgrading it or, if you must use bash ${BASH_VERSION}, download an old version of
+emojify from here: https://github.com/mrowa44/emojify/blob/old_bash_support/emojify"
+# Checks the installed bash version to see if it's compatible with emojify
+if (( ${BASH_VERSION%%.*} < 4 )); then
+    echo -e "$version_error_message"
+    exit 1
+fi
+
 # List generated by 
 # https://gist.github.com/GrenderG/fd4eb4c73eadad219b0ecb5f9345070a#file-emoji_scrap-py
 # and emoji_scrap_github.py
@@ -2860,18 +2869,6 @@ EOF
     exit 0
 }
 
-# Checks the installed bash version to see if it's compatible with emojify
-check_version () {
-    if (( ${BASH_VERSION%%.*} >= 4 )); then
-        return
-    else
-        echo -e "Oh my! That’s a very old version of bash you’re using, we don’t support that anymore :(\n" \
-        "\nConsider upgrading it or, if you must use bash ${BASH_VERSION} download an old version of" \
-        "emojify from here: https://github.com/mrowa44/emojify/blob/old_bash_support/emojify"
-        exit 0
-    fi
-}
-
 # If arguments are provided on the command line then check for supported help
 # options or process the arguments as emoji names.
 if [[ -n $1 ]]; then
@@ -2889,12 +2886,10 @@ if [[ -n $1 ]]; then
         ;;
 
     * )
-        check_version
         emojify_line "$*"
         ;;
     esac
 else
-    check_version
     while IFS=''; read -r line || [ -n "$line" ]; do
         emojify_line "$line"
     done