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add function to install missing documents #55

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2 changes: 2 additions & 0 deletions README.org
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,8 @@ commands:

- =devdocs-install=: Download and install (or reinstall) a document
distributed by [[https://devdocs.io]].
- =devdocs-ensure-docs-installed=: Check if documents are already
installed and install them if necessary.
- =devdocs-delete=: Remove an installed document.
- =devdocs-update-all=: Download and reinstall all installed documents
for which a newer version is available.
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10 changes: 10 additions & 0 deletions devdocs.el
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Expand Up @@ -275,6 +275,16 @@ already installed, reinstall it."
(rename-file (file-name-as-directory temp) dest))
(message "Document `%s' installed" slug)))

;;;###autoload
(defun devdocs-ensure-docs-installed (desired-docs)
"Ensure that every devdoc listed in DESIRED-DOCS is installed, without reinstalling."
(let ((installed (mapcar (lambda (installed-doc)
(cdr (assoc 'slug installed-doc)))
(devdocs--installed-docs))))
(dolist (desired-doc desired-docs)
(unless (cl-member desired-doc installed :test #'string=)
(devdocs-install desired-doc)))))

;;;###autoload
(defun devdocs-update-all ()
"Reinstall all documents with a new version available."
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