I use emacs (v 18.104.22.168) on windows 10, and I am impressed by all the funtionality of dired+. One function I use often is peep-dired, so I can preview my text files when scrolling down my files in dired. For some reason jpg files are also previewed, not as code, but as a picture. Is it possible to preview pdf, doc, docx, and xls files also, not as their code, but readable for humans?
auto-mode-alist so that it has an entry that assigns
my-pdf-mode then add an entry such as this to option
("\\.pdf$" . my-pdf-mode)
Normally, you can use
doc-view-mode for this (i.e.,
("\\.pdf$" . doc-view-mode), after loading library
doc-view), provided your Emacs build supports it. See the Emacs manual, node Document View, including this footnote.