[MIT-Scheme-devel] [PATCH] Implement DIRED-UP-DIRECTORY

[Rich Loveland]

In the attached patch, I've implemented the DIRED-UP-DIRECTORY command
for Edwin, and bound it to #\^ as found in that other Emacs.

Please let me know if there's a better way of specifying "the next
directory up" than just merging the current directory with "..".  I
read through the manual section on pathnames and the runtime pathname
code but I might have missed it.

dired-up-directory.patch
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