Fixed #12174 -- Corrected Bash command line completion when calling "python manage.py". Thanks to sethp for the report, and SmileyChris for the initial patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12386 bcc190cf-cafb-0310-a4f2-bffc1f526a37

extras/django_bash_completion

@@ -37,4 +37,36 @@ _django_completion()
                    COMP_CWORD=$COMP_CWORD \
 	               DJANGO_AUTO_COMPLETE=1 $1 ) )
 }
-complete -F _django_completion -o default django-admin.py manage.py
+complete -F _django_completion -o default django-admin.py manage.py django-admin
+
+_python_django_completion()
+{
+    if [[ ${COMP_CWORD} -ge 2 ]]; then
+        PYTHON_EXE=$( basename -- ${COMP_WORDS[0]} )
+        echo $PYTHON_EXE | egrep "python([2-9]\.[0-9])?" >/dev/null 2>&1
+        if [[ $? == 0 ]]; then
+            PYTHON_SCRIPT=$( basename -- ${COMP_WORDS[1]} )
+            echo $PYTHON_SCRIPT | egrep "manage\.py|django-admin(\.py)?" >/dev/null 2>&1
+            if [[ $? == 0 ]]; then
+                COMPREPLY=( $( COMP_WORDS="${COMP_WORDS[*]:1}" \
+                               COMP_CWORD=$(( COMP_CWORD-1 )) \
+                               DJANGO_AUTO_COMPLETE=1 ${COMP_WORDS[*]} ) )
+            fi
+        fi
+    fi
+}
+
+# Support for multiple interpreters.
+unset pythons
+if command -v whereis &>/dev/null; then
+    python_interpreters=$(whereis python | cut -d " " -f 2-)
+    for python in $python_interpreters; do
+        pythons="${pythons} $(basename -- $python)"
+    done
+    pythons=$(echo $pythons | tr " " "\n" | sort -u | tr "\n" " ")
+else
+    pythons=python
+fi
+
+complete -F _python_django_completion -o default $pythons
+