Tidying of CL files; make docstrings read better, remove commented-out code 2010-05-30 Aidan Kehoe <kehoea@parhasard.net> * cl.el: Remove extraneous empty lines. Remove the commented-out Lisp implementation of #'last, #'copy-list. Remove #'cl-maclisp-member. (acons, pairlis): Have the argument list reflect the docstring for these functions. * cl-macs.el (defun*): Have the argument list reflect the docstring. Document the syntax of keywords in ARGLIST. (defmacro*): Have the argument list reflect the docstring. Document &body, &whole and &environment. (function*): Have the argument list reflect the docstring. (loop): Have the argument list reflect the docstring. (eval-when, dolist, dotimes, do-symbols, flet, labels, macrolet, symbol-macrolet): Specify the argument list using the arguments: (...) syntax. (define-setf-method, rotatef, defsubst*): Have the argument list reflect the docstring. (letf, letf*): Specify the argument list using the arguments: (...) syntax. (svref, acons, pairlis): Add compiler macros for these functions. * cl-extra.el: Remove the commented-out Lisp implementation of #'equalp. If we want to look at it, it's in version control. (cl-expt): Remove this. The subr #'expt is always available. Call #'cl-float-limits at dump time. Remove the commented-out Lisp implementation of #'subseq. (concatenate): Use (error 'invalid-argument ...) here, if TYPE is not understood. (list-length): Don't manually get the length of a list, call #'length and return nil if the list is circular. * byte-optimize.el (equalp): This needs byte-optimize-binary-predicate as its optimizer, as do the other equality predicates.

/*
 * Copyright (c) 2000, Red Hat, Inc.
 *
 *     This program is free software; you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation; either version 2 of the License, or
 *     (at your option) any later version.
 *
 *     A copy of the GNU General Public License can be found at
 *     http://www.gnu.org/
 *
 * Written by DJ Delorie <dj@cygnus.com>
 *
 */

/* See concat.h.  Note that we canonicalize the result, this avoids
   multiple slashes being interpreted as UNCs. */

#include "win32.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>

char * CDECL
concat (char *s, ...)
{
  int len;
  char *rv, *arg;
  va_list v;

  if (!s)
    return 0;

  len = strlen (s);

  va_start (v, s);
  while (1)
    {
      arg = va_arg (v, char *);
      if (arg == 0)
	break;
      len += strlen (arg);
    }
  va_end (v);

  rv = (char *) malloc (len+1);
  strcpy (rv, s);
  va_start (v, s);
  while (1)
  {
    arg = va_arg (v, char *);
    if (arg == 0)
      break;
    strcat (rv, arg);
  }
  va_end (v);

  /* concat is only used for urls and files, so we can safely
     canonicalize the results */
  char *d;
  for (s=rv; *s; s++)
    if (*s == '\\')
      *s = '/';
  for (s=d=rv; *s; s++)
    {
      *d++ = *s;
      /* special case for URLs */
      if (*s == ':' && s[1] == '/' && s[2] == '/' && s > rv+1)
	{
	  *d++ = *++s;
	  *d++ = *++s;
	}
      else if (*s == '/')
	while (s[1] == '/')
	  s++;
    }
  *d = 0;

  return rv;
}

char *
backslash (char *s)
{
  for (char *t = s; *t; t++)
    if (*t == '/')
      *t = '\\';
  return s;
}