+(defun completion-basic-try-completion (string table pred point)
+ (let* ((beforepoint (substring string 0 point))
+ (afterpoint (substring string point))
+ (bounds (completion-boundaries beforepoint table pred afterpoint)))
+ (if (zerop (cdr bounds))
+ ;; `try-completion' may return a subtly different result
+ ;; than `all+merge', so try to use it whenever possible.
+ (let ((completion (try-completion beforepoint table pred)))
+ (if (not (stringp completion))
+ completion
+ (cons
+ (concat completion
+ (completion--merge-suffix completion point afterpoint))
+ (length completion))))
+ (let* ((suffix (substring afterpoint (cdr bounds)))
+ (prefix (substring beforepoint 0 (car bounds)))
+ (pattern (delete
+ "" (list (substring beforepoint (car bounds))
+ 'point
+ (substring afterpoint 0 (cdr bounds)))))
+ (all (completion-pcm--all-completions prefix pattern table pred)))
+ (if minibuffer-completing-file-name
+ (setq all (completion-pcm--filename-try-filter all)))
+ (completion-pcm--merge-try pattern all prefix suffix)))))
+
+(defun completion-basic-all-completions (string table pred point)
+ (let* ((beforepoint (substring string 0 point))
+ (afterpoint (substring string point))
+ (bounds (completion-boundaries beforepoint table pred afterpoint))
+ (suffix (substring afterpoint (cdr bounds)))
+ (prefix (substring beforepoint 0 (car bounds)))
+ (pattern (delete
+ "" (list (substring beforepoint (car bounds))
+ 'point
+ (substring afterpoint 0 (cdr bounds)))))
+ (all (completion-pcm--all-completions prefix pattern table pred)))
+ (completion-hilit-commonality
+ (if (consp all) (nconc all (car bounds)) all)
+ point)))