I use GNU Emacs on Windows and Cygwin as my shell. If I create a Cygwin shell subprocess with M-x shell, I get a proper bash prompt. If I type this:
it tab-completes to
cd ~/My Documents/
which is correct in Emacs/Tramp, but useless in the Cygwin bash shell subprocess, since the space has to be escaped with a backslash.
How do I get this tab-completion to automatically insert a backslash?