457 lines
17 KiB
EmacsLisp
457 lines
17 KiB
EmacsLisp
(require 'assoc)
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(defvar magit-key-mode-key-maps '()
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"This will be filled lazily with proper `define-key' built
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keymaps as they're reqeusted.")
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(defvar magit-key-mode-buf-name "*magit-key*"
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"Name of the buffer.")
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(defvar magit-key-mode-current-args '()
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"Will contain the arguments to be passed to git.")
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(defvar magit-key-mode-current-options '()
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"Will contain the arguments to be passed to git.")
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(defvar magit-log-mode-window-conf nil
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"Will hold the pre-menu configuration of magit.")
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(defvar magit-key-mode-groups
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'((logging
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(man-page "git-log")
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(actions
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("l" "Short" magit-display-log)
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("L" "Long" magit-log-long)
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("h" "Reflog" magit-reflog)
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("rl" "Ranged short" magit-display-log-ranged)
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("rL" "Ranged long" magit-log-long-ranged)
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("rh" "Ranged reflog" magit-reflog-ranged))
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(switches
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("-m" "Only merge commits" "--merges")
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("-f" "First parent" "--first-parent")
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("-i" "Case insesnitive patterns" "-i")
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("-pr" "Pickaxe regex" "--pickaxe-regex")
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("-n" "Name only" "--name-only")
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("-am" "All match" "--all-match")
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("-al" "All" "--all"))
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(arguments
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("=r" "Relative" "--relative=" read-directory-name)
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("=c" "Committer" "--committer=" read-from-minibuffer)
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("=>" "Since" "--since=" read-from-minibuffer)
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("=<" "Before" "--before=" read-from-minibuffer)
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("=s" "Pickaxe search" "-S" read-from-minibuffer)
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("=a" "Author" "--author=" read-from-minibuffer)
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("=g" "Grep" "--grep=" read-from-minibuffer)))
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(running
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(actions
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("!" "Command from root" magit-shell-command)
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(":" "Git command" magit-git-command)))
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(fetching
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(man-page "git-fetch")
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(actions
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("f" "Current" magit-fetch-current)
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("a" "All" magit-remote-update)
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("o" "Other" magit-fetch)))
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(pushing
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(man-page "git-push")
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(actions
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("p" "Push" magit-push)
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("t" "Push tags" magit-push-tags))
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(switches
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("-f" "Force" "--force")
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("-d" "Dry run" "-n")))
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(pulling
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(man-page "git-pull")
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(actions
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("p" "Pull" magit-pull))
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(switches
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("-r" "Rebase" "--rebase")))
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(branching
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(man-page "git-branch")
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(actions
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("V" "Branch manager" magit-show-branches)
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("B" "Create" magit-create-branch)
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("m" "Move" magit-move-branch)
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("d" "Delete" magit-delete-branch)
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("c" "Checkout" magit-checkout)))
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(tagging
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(man-page "git-tag")
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(actions
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("t" "Lightweight" magit-tag)
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("T" "Annotated" magit-annotated-tag))
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(switches
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("-f" "Force" "-f")))
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(stashing
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(man-page "git-stash")
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(actions
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("s" "Save" magit-stash)
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("S" "Snapshot" magit-stash-snapshot))
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(switches
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("-k" "Keep index" "--keep-index")))
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(merging
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(man-page "git-merge")
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(actions
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("m" "Merge" magit-merge))
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(switches
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("-ff" "Fast-forward only" "--ff-only")
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("-nf" "No fast-forward" "--no-ff")
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("-nc" "No commit" "--no-commit")
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("-sq" "Squash" "--squash"))
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(arguments
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("-st" "Strategy" "--strategy" read-from-minibuffer)))
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(rewriting
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(actions
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("b" "Begin" magit-rewrite-start)
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("s" "Stop" magit-rewrite-stop)
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("a" "Abort" magit-rewrite-abort)
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("f" "Finish" magit-rewrite-finish)
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("*" "Set unused" magit-rewrite-set-unused)
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("." "Set used" magit-rewrite-set-used))))
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"Holds the key, help, function mapping for the log-mode. If you
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modify this make sure you reset `magit-key-mode-key-maps' to
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nil.")
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(defun magit-key-mode-delete-group (group)
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"Add a new group (GROUP) to `magit-key-mode-key-maps'."
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(let ((items (assoc group magit-key-mode-groups)))
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(when items
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;; reset the cache
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(setq magit-key-mode-key-maps nil)
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;; delete the whole group
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(setq magit-key-mode-groups
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(delq items magit-key-mode-groups))
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;; unbind the defun
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(magit-key-mode-de-generate group))
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magit-key-mode-groups))
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(defun magit-key-mode-add-group (group)
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"Add a new group to `magit-key-mode-key-maps'. If there's
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already a group of that name then this will completely remove it
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and put in its place an empty one of the same name."
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(when (assoc group magit-key-mode-groups)
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(magit-key-mode-delete-group group))
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(setq magit-key-mode-groups
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(cons (list group '(actions)) magit-key-mode-groups)))
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(defun magit-key-mode-key-defined-p (for-group key)
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"If KEY is defined as any of switch, argument or action within
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FOR-GROUP then return t"
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(catch 'result
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(let ((options (magit-key-mode-options-for-group for-group)))
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(dolist (type '(actions switches arguments))
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(when (assoc key (assoc type options))
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(throw 'result t))))))
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(defun magit-key-mode-update-group (for-group thing &rest args)
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"Abstraction for setting values in `magit-key-mode-key-maps'."
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(let* ((options (magit-key-mode-options-for-group for-group))
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(things (assoc thing options))
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(key (car args)))
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(if (cdr things)
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(if (magit-key-mode-key-defined-p for-group key)
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(error "%s is already defined in the %s group." key for-group)
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(setcdr (cdr things) (cons args (cddr things))))
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(setcdr things (list args)))
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(setq magit-key-mode-key-maps nil)
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things))
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(defun magit-key-mode-insert-argument (for-group key desc arg read-func)
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"Add a new binding (KEY) in FOR-GROUP which will use READ-FUNC
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to receive input to apply to argument ARG git is run. DESC should
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be a brief description of the binding."
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(magit-key-mode-update-group for-group 'arguments key desc arg read-func))
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(defun magit-key-mode-insert-switch (for-group key desc switch)
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"Add a new binding (KEY) in FOR-GROUP which will add SWITCH to git's
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commandline when it runs. DESC should be a brief description of
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the binding."
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(magit-key-mode-update-group for-group 'switches key desc switch))
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(defun magit-key-mode-insert-action (for-group key desc func)
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"Add a new binding (KEY) in FOR-GROUP which will run command
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FUNC. DESC should be a brief description of the binding."
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(magit-key-mode-update-group for-group 'actions key desc func))
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(defun magit-key-mode-options-for-group (for-group)
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"Retrieve the options (switches, commands and arguments) for
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the group FOR-GROUP."
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(or (cdr (assoc for-group magit-key-mode-groups))
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(error "Unknown group '%s'" for-group)))
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(defun magit-key-mode-help (for-group)
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"Provide help for a key (which the user is prompted for) within
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FOR-GROUP."
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(let* ((opts (magit-key-mode-options-for-group for-group))
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(seq (read-key-sequence "Enter command prefix: "))
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(actions (cdr (assoc 'actions opts))))
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;; is it an action? If so popup the help for the to-be-run
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;; function
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(if (assoc seq actions)
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(describe-function (nth 2 (assoc seq actions)))
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;; otherwise give the user a man page
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(man (or (cadr (assoc 'man-page opts))
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(error "No help associated with %s" seq))))))
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(defun magit-key-mode-exec-at-point ()
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"Run action/args/option at point."
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(interactive)
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(let* ((key (or (get-text-property (point) 'key-group-executor)
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(error "Nothing at point to do.")))
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(def (lookup-key (current-local-map) key)))
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(call-interactively def)))
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(defun magit-key-mode-build-keymap (for-group)
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"Construct a normal looking keymap for the key mode to use and
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put it in magit-key-mode-key-maps for fast lookup."
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(let* ((options (magit-key-mode-options-for-group for-group))
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(actions (cdr (assoc 'actions options)))
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(switches (cdr (assoc 'switches options)))
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(arguments (cdr (assoc 'arguments options))))
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(let ((map (make-sparse-keymap)))
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;; ret dwim
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(define-key map (kbd "RET") 'magit-key-mode-exec-at-point)
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;; all maps should 'quit' with C-g
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(define-key map (kbd "C-g") (lambda ()
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(interactive)
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(magit-key-mode-command nil)))
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;; run help
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(define-key map (kbd "?") `(lambda ()
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(interactive)
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(magit-key-mode-help ',for-group)))
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(when actions
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(dolist (k actions)
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(define-key map (car k) `(lambda ()
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(interactive)
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(magit-key-mode-command ',(nth 2 k))))))
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(when switches
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(dolist (k switches)
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(define-key map (car k) `(lambda ()
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(interactive)
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(magit-key-mode-add-option
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',for-group
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,(nth 2 k))))))
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(when arguments
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(dolist (k arguments)
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(define-key map (car k) `(lambda ()
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(interactive)
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(magit-key-mode-add-argument
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',for-group
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,(nth 2 k)
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',(nth 3 k))))))
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(aput 'magit-key-mode-key-maps for-group map)
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map)))
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(defun magit-key-mode-command (func)
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(let ((args '()))
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;; why can't maphash return a list?!
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(maphash (lambda (k v)
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(push (concat k (shell-quote-argument v)) args))
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magit-key-mode-current-args)
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(let ((magit-custom-options (append args magit-key-mode-current-options)))
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(set-window-configuration magit-log-mode-window-conf)
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(when func
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(call-interactively func))
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(magit-key-mode-kill-buffer))))
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(defvar magit-key-mode-current-args nil
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"A hash-table of current argument set (which will eventually
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make it to the git command-line).")
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(defun magit-key-mode-add-argument (for-group arg-name input-func)
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(let ((input (funcall input-func (concat arg-name ": "))))
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(puthash arg-name input magit-key-mode-current-args)
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(magit-key-mode-redraw for-group)))
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(defvar magit-key-mode-current-options '()
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"Current option set (which will eventually make it to the git
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command-line).")
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(defun magit-key-mode-add-option (for-group option-name)
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"Toggles the appearance of OPTION-NAME in
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`magit-key-mode-current-options'."
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(if (not (member option-name magit-key-mode-current-options))
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(add-to-list 'magit-key-mode-current-options option-name)
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(setq magit-key-mode-current-options
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(delete option-name magit-key-mode-current-options)))
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(magit-key-mode-redraw for-group))
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(defun magit-key-mode-kill-buffer ()
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(interactive)
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(kill-buffer magit-key-mode-buf-name))
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(defvar magit-log-mode-window-conf nil
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"Pre-popup window configuration.")
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(defun magit-key-mode (for-group &optional original-opts)
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"Mode for magit key selection. All commands, switches and
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options can be toggled/actioned with the key combination
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highlighed before the description."
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(interactive)
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;; save the window config to restore it as was (no need to make this
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;; buffer local)
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(setq magit-log-mode-window-conf
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(current-window-configuration))
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;; setup the mode, draw the buffer
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(let ((buf (get-buffer-create magit-key-mode-buf-name)))
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(delete-other-windows)
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(split-window-vertically)
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(other-window 1)
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(switch-to-buffer buf)
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(kill-all-local-variables)
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(set (make-local-variable
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'magit-key-mode-current-options)
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original-opts)
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(set (make-local-variable
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'magit-key-mode-current-args)
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(make-hash-table))
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(magit-key-mode-redraw for-group))
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(message "Bindings prefixing options action them. '?' for help"))
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(defun magit-key-mode-get-key-map (for-group)
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"Get or build the keymap for FOR-GROUP."
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(or (cdr (assoc for-group magit-key-mode-key-maps))
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(magit-key-mode-build-keymap for-group)))
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(defun magit-key-mode-redraw (for-group)
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"(re)draw the magit key buffer."
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(let ((buffer-read-only nil)
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(old-point (point)))
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(erase-buffer)
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(make-local-variable 'font-lock-defaults)
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(use-local-map (magit-key-mode-get-key-map for-group))
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(magit-key-mode-draw for-group)
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(delete-trailing-whitespace)
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(setq mode-name "magit-key-mode" major-mode 'magit-key-mode)
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(goto-char old-point))
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(setq buffer-read-only t)
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(fit-window-to-buffer))
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(defun magit-key-mode-draw-header (header)
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"Draw a header with the correct face."
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(insert (propertize header 'face 'font-lock-keyword-face)))
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(defvar magit-key-mode-args-in-cols nil
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"When true, draw arguments in columns as with switches and
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options.")
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(defun magit-key-mode-draw-args (args)
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"Draw the args part of the menu."
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(when args
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(let ((strs (mapcar
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(lambda (argument)
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(propertize
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(format " %s: %s (%s) %s"
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(propertize
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(car argument)
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'face 'font-lock-builtin-face)
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(nth 1 argument)
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(nth 2 argument)
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(propertize
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(gethash (nth 2 argument)
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magit-key-mode-current-args
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"")
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'face 'widget-field))
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'key-group-executor (car argument)))
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args)))
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(magit-key-mode-draw-header "Args\n")
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(magit-key-mode-draw-in-cols strs (not magit-key-mode-args-in-cols)))))
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(defun magit-key-mode-draw-switches (switches)
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"Draw the switches part of the menu."
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(when switches
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(let ((switch-strs (mapcar
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(lambda (s)
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(let ((option (nth 2 s)))
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(propertize
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(format " %s: %s (%s)"
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(propertize (car s)
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'face 'font-lock-builtin-face)
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(nth 1 s)
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(if (member option magit-key-mode-current-options)
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(propertize
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option
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'face 'font-lock-warning-face)
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option))
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'key-group-executor (car s))))
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switches)))
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(magit-key-mode-draw-header "Switches\n")
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(magit-key-mode-draw-in-cols switch-strs))))
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(defun magit-key-mode-draw-actions (actions)
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"Draw the actions part of the menu."
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(when actions
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(let ((action-strs (mapcar
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(lambda (a)
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(propertize
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(format
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" %s: %s"
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(propertize (car a)
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'face 'font-lock-builtin-face)
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(nth 1 a))
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'key-group-executor (car a)))
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actions)))
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(magit-key-mode-draw-header "Actions\n")
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(magit-key-mode-draw-in-cols action-strs))))
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(defun magit-key-mode-draw-in-cols (strings &optional one-col-each)
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"Given a list of strings, print in columns (using `insert'). If
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ONE-COL-EACH is true then don't columify, but rather, draw each
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item on one line."
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(let ((longest-act (apply 'max (mapcar 'length strings))))
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(while strings
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(let ((str (car strings)))
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(let ((padding (make-string (- (+ longest-act 3) (length str)) ? )))
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(insert str)
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(if (or one-col-each
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(and (> (+ (length padding) ;
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(current-column)
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longest-act)
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(window-width))
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(cdr strings)))
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(insert "\n")
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(insert padding))))
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(setq strings (cdr strings))))
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(insert "\n"))
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(defun magit-key-mode-draw (for-group)
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"Function used to draw actions, switches and parameters."
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(let* ((options (magit-key-mode-options-for-group for-group))
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(switches (cdr (assoc 'switches options)))
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(arguments (cdr (assoc 'arguments options)))
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(actions (cdr (assoc 'actions options))))
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(magit-key-mode-draw-switches switches)
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(magit-key-mode-draw-args arguments)
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(magit-key-mode-draw-actions actions)))
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(defun magit-key-mode-de-generate (group)
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"Unbind the function for GROUP."
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(fmakunbound
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(intern (concat "magit-key-mode-popup-" (symbol-name group)))))
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(defun magit-key-mode-generate (group)
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"Generate the key-group menu for GROUP"
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(let ((opts (magit-key-mode-options-for-group group)))
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(eval
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`(defun ,(intern (concat "magit-key-mode-popup-" (symbol-name group))) nil
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,(concat "Key menu for " (symbol-name group))
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(interactive)
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(magit-key-mode (quote ,group))))))
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;; create the interactive functions for the key mode popups (which are
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;; applied in the top-level key maps)
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(mapc (lambda (g)
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(magit-key-mode-generate (car g)))
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magit-key-mode-groups)
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(provide 'magit-key-mode)
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