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I have a file with a .md extension, and I want to run a command to interpret/parse a file when markdown-mode is active with a C-c C-c key combination, for example. I want to run this shell command:
aglio -i foo.md -o foo.html
Wherefoo.md is the file name of the current buffer and foo.html is this name with replaced extension (to html). How can I do this in Emacs?
Running shell command could be done with (shell-command COMMAND). Then we need to make string for executing command. We'll concatenate it from sections with (concat ...). We have 5 sections of the command:
(concat "aglio -i " ;; 1
(buffer-file-name) ;; 2
" -o " ;; 3
(file-name-sans-extension (buffer-file-name)) ;; 4
".html") ;; 5
So, if the buffer file name is foo.md, then result of this script will be
aglio -i foo.md -o foo.html
We could make it function, like next:
(defun aglio-current-file ()
"Execute aglio shell command on current file"
(interactive)
(shell-command
(concat "aglio -i " (buffer-file-name)
" -o " (file-name-sans-extension (buffer-file-name)) ".html")))
We could define key for markdown-mode-map with next code
(eval-after-load 'markdown-mode
'(define-key markdown-mode-map (kbd "C-c C-c s")
'aglio-current-file))
I use C-c C-c s instead of C-c C-c cause this version of the markdown package from melpa uses C-c C-c as prefix for buffer-wide commands.
C-c C-cmake different things into different major modes, inorg-modeit have very much location-specific commands. But you could bind this on any key you want. But intomarkdown-modetheC-c C-cis the prefix key, so you'd better don't rebind it.