improvement for `delete-indentation'

[Dave Love]

This DTRT with continued lines in the style of sh &c and I doubt it
could break anything.

2004-01-06  Dave Love  <address@hidden>

        * simple.el (delete-indentation): Deal with typical continued
        lines.

*** /dl/sr/homes/px/fx/esrc/lisp/simple.el~     Thu Nov 13 20:31:14 2003
--- /dl/sr/homes/px/fx/esrc/lisp/simple.el      Tue Jan  6 15:51:23 2004
***************
*** 228,233 ****
--- 228,235 ----
                          (buffer-substring (point)
                                            (+ (point) (length fill-prefix)))))
            (delete-region (point) (+ (point) (length fill-prefix))))
+       (if (eq ?\\ (char-syntax (preceding-char))) ; assume continued line
+           (delete-backward-char))
        (fixup-whitespace))))
  
  (defalias 'join-line #'delete-indentation) ; easier to find