new bash settings from arch

bash/.bashrc.d/git.bash

@@ -0,0 +1,16 @@
+if [ -f "/usr/share/git/completion/git-prompt.sh" ]; then
+  source /usr/share/git/completion/git-prompt.sh
+  export GIT_PS1_SHOWDIRTYSTATE=1      # shows * if unstaged, + if staged
+  export GIT_PS1_SHOWSTASHSTATE=1      # shows $ if stashed
+  export GIT_PS1_SHOWUNTRACKEDFILES=1  # shows % if untracked files
+  export GIT_PS1_SHOWUPSTREAM="auto"   # shows < > = behind/ahead/equal
+  export GIT_PS1_SHOWDIRTYSTATE=
+  export GIT_PS1_SHOWSTASHSTATE=
+  export GIT_PS1_SHOWUNTRACKEDFILES=
+  export GIT_PS1_SHOWUPSTREAM=
+
+  PS1='\[\e[32m\]\u@\h\[\e[0m\] \W$(__git_ps1) \$ '
+else
+  printf "Cannot find /usr/share/git/completion/git-prompt.sh\n"
+  PS1='[\u@\h \W]\$ '
+fi