use pure shell impl of prpg, document git sww --all

Author: nonrational

.bashrc

@@ -29,9 +29,9 @@ alias hist="history|tail"
 alias psa="ps auxwww"
 alias cdate="date '+%Y%m%d%H%M%S'"
 
-# random password generator
-rpg(){
-  size=${1:-16}; ruby -e "require 'securerandom'; puts SecureRandom.urlsafe_base64($size);"
+# psuedo-random, insecure password generator
+prpg() {
+  echo -n $RANDOM | openssl sha1 -binary | base64 | tr -d '/+=' | | cut -c-16
 }
 
 reset_known_host() {

.githelpers

@@ -94,6 +94,7 @@ reset_wildcard(){
 }
 
 # Accepts a pattern and switches to the first branch that matches it.
+# Provide the `--all` flag to include remote branches as well.
 switch_wildcard() {
   local all_branches=false
   while [[ "$1" =~ ^- && ! "$1" == "--" ]]; do case $1 in