diff options
Diffstat (limited to 'lisp/emacs-lisp/tabulated-list.el')
| -rw-r--r-- | lisp/emacs-lisp/tabulated-list.el | 41 |
1 files changed, 30 insertions, 11 deletions
diff --git a/lisp/emacs-lisp/tabulated-list.el b/lisp/emacs-lisp/tabulated-list.el index 0bf98952458..13f610bd230 100644 --- a/lisp/emacs-lisp/tabulated-list.el +++ b/lisp/emacs-lisp/tabulated-list.el @@ -115,16 +115,25 @@ where: This should be either a function, or a list. If a list, each element has the form (ID [DESC1 ... DESCN]), where: + - ID is nil, or a Lisp object uniquely identifying this entry, which is used to keep the cursor on the \"same\" entry when rearranging the list. Comparison is done with `equal'. - Each DESC is a column descriptor, one for each column - specified in `tabulated-list-format'. A descriptor is either - a string, which is printed as-is, or a list (LABEL . PROPS), - which means to use `insert-text-button' to insert a text - button with label LABEL and button properties PROPS. - The string, or button label, must not contain any newline. + specified in `tabulated-list-format'. The descriptor DESC is + one of: + + - A string, which is printed as-is, and must not contain any + newlines. + + - An image descriptor (a list), which is used to insert an + image (see Info node `(elisp) Image Descriptors'). + + - A list (LABEL . PROPS), which means to use + `insert-text-button' to insert a text button with label + LABEL and button properties PROPS. LABEL must not contain + any newlines. If `tabulated-list-entries' is a function, it is called with no arguments and must return a list of the above form.") @@ -547,7 +556,9 @@ Return the column number after insertion." (props (nthcdr 3 format)) (pad-right (or (plist-get props :pad-right) 1)) (right-align (plist-get props :right-align)) - (label (if (stringp col-desc) col-desc (car col-desc))) + (label (cond ((stringp col-desc) col-desc) + ((eq (car col-desc) 'image) " ") + (t (car col-desc)))) (label-width (string-width label)) (help-echo (concat (car format) ": " label)) (opoint (point)) @@ -571,11 +582,15 @@ Return the column number after insertion." 'display `(space :align-to ,(+ x shift)))) (setq width (- width shift)) (setq x (+ x shift)))) - (if (stringp col-desc) - (insert (if (get-text-property 0 'help-echo label) - label - (propertize label 'help-echo help-echo))) - (apply 'insert-text-button label (cdr col-desc))) + (cond ((stringp col-desc) + (insert (if (get-text-property 0 'help-echo label) + label + (propertize label 'help-echo help-echo)))) + ((eq (car col-desc) 'image) + (insert (propertize " " + 'display col-desc + 'help-echo help-echo))) + ((apply 'insert-text-button label (cdr col-desc)))) (let ((next-x (+ x pad-right width))) ;; No need to append any spaces if this is the last column. (when not-last-col @@ -669,6 +684,10 @@ With a numeric prefix argument N, sort the Nth column. If the numeric prefix is -1, restore order the list was originally displayed in." (interactive "P") + (when (and n + (or (>= n (length tabulated-list-format)) + (< n -1))) + (user-error "Invalid column number")) (if (equal n -1) ;; Restore original order. (progn |