Commit 0b93ff3a authored by Nick Roberts's avatar Nick Roberts
Browse files

* pcvs-util.el (cvs-strings->string, cvs-string->strings): Rename

and move to...

* subr.el (strings->string, string->strings):
parent 7f87eddb
......@@ -2768,6 +2768,36 @@ Modifies the match data; use `save-match-data' if necessary."
(cons (substring string start)
(nreverse list)))
;; (string->strings (strings->string X)) == X
(defun strings->string (strings &optional separator)
"Concatenate the STRINGS, adding the SEPARATOR (default \" \").
This tries to quote the strings to avoid ambiguity such that
(string->strings (strings->string strs)) == strs
Only some SEPARATORs will work properly."
(let ((sep (or separator " ")))
(lambda (str)
(if (string-match "[\\\"]" str)
(concat "\"" (replace-regexp-in-string "[\\\"]" "\\\\\\&" str) "\"")
strings sep)))
;; (string->strings (strings->string X)) == X
(defun string->strings (string &optional separator)
"Split the STRING into a list of strings.
It understands elisp style quoting within STRING such that
(string->strings (strings->string strs)) == strs
The SEPARATOR regexp defaults to \"\\s-+\"."
(let ((sep (or separator "\\s-+"))
(i (string-match "[\"]" string)))
(if (null i) (split-string string sep t) ; no quoting: easy
(append (unless (eq i 0) (split-string (substring string 0 i) sep t))
(let ((rfs (read-from-string string i)))
(cons (car rfs)
(string->strings (substring string (cdr rfs))
;;;; Replacement in strings.
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