Add pactl support

dotfiles-old/bin/volume

@@ -1,18 +1,32 @@
 #!/bin/sh
 
-# Has some undocumented features but they're functional (as far as I know)
-# and system-independent. just shortcuts for me really.
-
 argv0="$0"
 
-! which stris >/dev/null 2>/dev/null \
+# ADDING A NEW SOUND SERVER/CLIENT/WHATEVERIDK
-	&& printf "%b: Missing stris.\n" \
+# `volume a` and `volume s` are the system dependent functions.
+
+# `volume a $2` must set the volume to $2, an integer value. This should be a
+# percentage, 100% being the loudest possible volume that can be output by
+# hardware without quality loss. Percentages above 100% will be allowable in
+# software if using percentage units. If percentage units are implausible to
+# implement, system units are okay (e.g. 0-$arbitrary scale versus 0-100).
+
+# `volume s` must output the current volume in integer form in whatever units
+# are being used by `volume a` on the given system.
+
+! command -v stris >/dev/null 2>/dev/null \
+	&& printf "%b: Missing stris.\n" "$argv0" \
 	&& exit 1 \
 	|| true
 
 VOLUME_TMP_FILE="$HOME/.volume-previous"
 
-usage() {
+unknown_system(){
+	printf "%s: Unknown system.\n" "$argv0" 1>&2
+	exit 1
+}
+
+usage(){
 	printf "\
 Usage: %b [function] (argument)\n" "$argv0"
 	printf "\