(buffer-save-without-query): New var (buffer-local).
(save-some-buffers): Save those buffers first, w/o asking. (insert-directory-ls-version): New variable. (insert-directory): When ls returns an error, test the version number to decide what the return code means. With --dired output format, detect and distinguish lines that are really error messages. (insert-directory-adj-pos): New function.
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