dotfiles.bashrc: Expanded on the routine by which dotfile and dot aliases are introduced

.bashrc.d/dotfiles.bashrc

@@ -1,2 +1,32 @@
-alias dotfiles="git -c include.path=$HOME/.dotfiles/dotgit_config --git-dir=$HOME/.dotgit/ --work-tree=$HOME"
-complete -o bashdefault -o default -o nospace -F __git_wrap__git_main dotfiles
+# Alias dotfiles to the custom git command required for the functioning of the
+# dotfiles utility
+dotgit_config="$HOME/.dotfiles/dotgit_config"
+dotgit_dir="$HOME/.dotgit/"
+alias dotfiles="git -c include.path=$dotgit_config --git-dir=$dotgit_dir --work-tree=$HOME"
+
+# Shorten the dotfiles command to dot if possible
+if ! command -v dot >/dev/null 2>&1
+then
+  alias dot="dotfiles"
+  dot_aliased="yes"
+fi
+
+# Add bash completion to the aliases if possible
+possible_locations=(
+  "/usr/share/doc/git/contrib/completion/git-completion.bash"
+  "/usr/share/git/completion/git-completion.bash"
+)
+
+for completion_file in "${possible_locations[@]}"
+do
+  if [[ -r "$completion_file" ]]
+  then
+    . $completion_file
+    __git_complete dotfiles __git_main
+    if [[ dot_aliased == "yes" ]]
+    then
+      __git_complete dot __git_main
+    fi
+    break
+  fi
+done