made real real nice

main.sh

@@ -1,30 +1,34 @@
 #!/usr/bin/env sh
 set -e
+export LC_ALL='C.UTF8'
 
 help_text() {
   printf "
 -t path to pango formated text file
    how to format: https://usage.imagemagick.org/text/#pango
-   as an environment variable IMAGE_TEXT not with path but the text itself
+   or as an environment variable IMAGE_TEXT not with path but the text itself
    if -t is set the environment variable will be ignored
 
--p is a path to write the jpg to
-   as an environment variable PICTURE_PATH
+-p is a path to write the file to. Format is determined by file ending.
+   or as an environment variable PICTURE_PATH
    if -p is set the environment variable will be ignored
   "
   exit 1
 }
 
-export LC_ALL='C.UTF8'
+# directory of the script itself
 SCRIPT_DIR="$(cd -P -- "$(dirname -- "$(command -v -- "$0")")" && pwd -P)"
 export SCRIPT_DIR
 
-P_PATH="$SCRIPT_DIR/label.jpg"
+# set defaults
+P_PATH="$SCRIPT_DIR/example.jpg"
 I_TEXT="$(cat "$SCRIPT_DIR"/text.pango.example 2>/dev/null || echo 'example text')"
 
+# read from environment variables
 P_PATH="${PICTURE_PATH:-$P_PATH}"
 I_TEXT="${IMAGE_TEXT:-$I_TEXT}"
 
+# options, they override environment variables
 while getopts "p:t:" opt
 do
   case "$opt" in