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Chong Yidong authored
(dired-do-chxxx): Treat empty input for "touch" as no -t option. Omit initial minibuffer contents. (dired-do-chmod): Signal an error on empty input. (dired-mark-read-string): Don't return default on empty input. * files.el (file-modes-symbolic-to-number): Doc fix. Fixes: debbugs:9361
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