diff --git a/setup.sh b/setup.sh
index a560522..edc5b0e 100755
--- a/setup.sh
+++ b/setup.sh
@@ -137,10 +137,12 @@ setup_gitconf(){
     $_gc alias.addi "add -i"
     $_gc alias.clean-p "!test -z \"\$(git status -s -uno)\""
 
-    # alias bopen and bclose, which can be useful for topic branching
-    $_gc alias.bopen "checkout -b"
-    $_gc alias.bclose \
+    # alias open-branch and close-branch, which can be useful for topic branching
+    $_gc alias.open-branch "checkout -b"
+    $_gc alias.close-branch \
         "!sh -cx 'git stash && git checkout master && git merge --no-ff -'"
+    $_gc alias.open "open-branch"
+    $_gc alias.close "close-branch"
 
     $_gc alias.todo "grep -E -i 'todo:|note:|fixme:'"
 
diff --git a/shrc b/shrc
index 6cfffff..fb1d630 100755
--- a/shrc
+++ b/shrc
@@ -681,27 +681,30 @@ _tmux_prefs(){
 }
 
 dt(){
-    # dt [<name>] [<command ...>]
+    # dt [-h] [<name>] [<command ...>]
     __dtach_dir="${TMP}/dtach"
     mkdir -p "${__dtach_dir}"
 
     if test -n "${__MY_DTACH}"
     then
-        soc_name="`echo $__MY_DTACH | sed -e "s ^$__dtach_dir/  "`"
+        # if already in dtach session print current session
+        soc_name="`basename "$__MY_DTACH"`"
         echo "Current session: ${soc_name}"
     fi
 
     if test -z "$1"
     then
+        # if no arg given show list of sessions
         echo "Sessions:"
         ls "${__dtach_dir}"
         return 0
     elif test "$1" = "-h"
     then
-        echo "dt: usage: dt <name> [<command ...>]" 1>&2
+        echo "dt: usage: dt [-h] [<name>] [<command ...>]" 1>&2
         return 1
     fi
 
+    # set socket name
     soc_name="${__dtach_dir}/$1"
     shift
 
@@ -718,6 +721,7 @@ dt(){
         return 1
     elif test -z "$1"
     then
+        # if no command given invoke current shell
         __MY_DTACH="$soc_name" dtach -c "$soc_name" -e ^^ sh -c "$SHELL"
         # echo "dt: Socket named $soc_name not exists and no command specified."
         # return 1
@@ -1048,8 +1052,11 @@ test -n "$__MY_SCRIPT" && \
 test -n "$SSH_CONNECTION" && \
     __my_ps1_str="${__my_ps1_str}${__my_c5}SSH${__my_cdef} "
 
-test -n "$__MY_DTACH" && \
-    __my_ps1_str="${__my_ps1_str}${__my_c5}DTACH${__my_cdef} "
+if test -n "$__MY_DTACH"
+then
+    __dt_name="`basename "$__MY_DTACH"`"
+    __my_ps1_str="${__my_ps1_str}${__my_c5}DT:${__dt_name}${__my_cdef} "
+fi
 
 __my_ps1_scale(){
     if null type stty && ! $ismsys