lock: add param_add array

Only supports i3lock -n for now. Also move up scriptpath to error out as soon as there's a path issue (i.e., before running convert).

lock

@@ -3,13 +3,18 @@
 # Dependencies: imagemagick, i3lock-color-git, scrot, wmctrl (optional)
 set -o errexit -o noclobber -o nounset
 
+# get path where the script is located to find the lock icon
+scriptpath=$(readlink -f -- "$0")
+scriptpath=${scriptpath%/*}
+
 hue=(-level "0%,100%,0.6")
 effect=(-filter Gaussian -resize 20% -define "filter:sigma=1.5" -resize 500.5%)
 # default system sans-serif font
 font="$(convert -list font | awk "{ a[NR] = \$2 } /family: $(fc-match sans -f "%{family}\n")/ { print a[NR-1]; exit }")"
 image="$(mktemp).png"
 shot=(import -window root)
 desktop=""
+param_add=("")
 shot_custom=false
 
 options="Options:
@@ -29,6 +34,8 @@ options="Options:
                      Note: this option will not lock the screen, it displays
                      the list and exits immediately.
 
+    -n, --nofork     Do not fork i3lock after starting.
+
     --               Must be last option. Set command to use for taking a
                      screenshot. Default is 'import -window root'. Using 'scrot'
                      or 'maim' will increase script speed and allow setting
@@ -37,7 +44,7 @@ options="Options:
 # move pipefail down as for some reason "convert -list font" returns 1
 set -o pipefail
 trap 'rm -f "$image"' EXIT
-temp="$(getopt -o :hdpglt:f: -l desktop,help,listfonts,pixelate,greyscale,text:,font: --name "$0" -- "$@")"
+temp="$(getopt -o :hdnpglt:f: -l desktop,help,listfonts,nofork,pixelate,greyscale,text:,font: --name "$0" -- "$@")"
 eval set -- "$temp"
 
 # l10n support
@@ -72,6 +79,7 @@ while true ; do
         -l|--listfonts)
 	    convert -list font | awk -F: '/Font: / { print $2 }' | sort -du | command -- ${PAGER:-less}
 	    exit 0 ;;
+	-n|--nofork) param_add=(--nofork) ; shift ;;
         --) shift; shot_custom=true; break ;;
         *) echo "error" ; exit 1 ;;
     esac
@@ -83,10 +91,6 @@ fi
 
 command -- "${shot[@]}" "$image"
 
-# get path where the script is located to find the lock icon
-scriptpath=$(readlink -f -- "$0")
-scriptpath=${scriptpath%/*}
-
 value="60" #brightness value to compare to
 
 color=$(convert "$image" -gravity center -crop 100x100+0+0 +repage -colorspace hsb \
@@ -116,9 +120,9 @@ convert "$image" "${hue[@]}" "${effect[@]}" -font "$font" -pointsize 26 -fill "$
 ${desktop} ${desktop:+-k on}
 
 # try to use a forked version of i3lock with prepared parameters
-if ! i3lock -n "${param[@]}" -i "$image" > /dev/null 2>&1; then
+if ! i3lock "${param_add[@]}" "${param[@]}" -i "$image" > /dev/null 2>&1; then
     # We have failed, lets get back to stock one
-    i3lock -n -i "$image"
+    i3lock "${param_add[@]}" -i "$image"
 fi
 
 # As above, if we were passed -d/--desktop, we'll attempt to restore all windows