trac 34935: fix sage-shell mode in emacs

Author: jhpalmieri

src/sage/interfaces/all.py

@@ -43,3 +43,9 @@
 lazy_import('sage.interfaces.read_data', 'read_data')
 lazy_import('sage.interfaces.scilab', 'scilab')
 lazy_import('sage.interfaces.tachyon', 'tachyon_rt')
+
+# The following variable is used by sage-shell-mode in emacs:
+interfaces = ['gap', 'gap3', 'giac', 'gp', 'mathematica', 'gnuplot',
+              'kash', 'magma', 'macaulay2', 'maple', 'maxima',
+              'mathematica', 'mwrank', 'octave', 'r', 'singular',
+              'sage0', 'sage']