Use new string trimming functions in parsers.

* include/mailutils/cstr.h (mu_str_stripws): New function.
* mailbox/stripws.c: New file.
* mailbox/Makefile.am (libmailutils_la_SOURCES): Add stripws.c

* examples/nntpclient.c (stripwhite): Remove. Use mu_str_stripws instead.
(execute_line): Rewrite using new string functions.
* examples/pop3client.c: Likewise.
* mailbox/mailcap.c (stripwhite): Remove. Use mu_str_stripws instead.
* mailbox/mime.c (_strltrim, _strttrim, _strtrim): Remove. Use
mu_str_stripws instead.

* mail/mail.c: Use mu_str_stripws.
* mail/mail.h (util_stripwhite): Remove prototype.
* mail/util.c (util_stripwhite): Remove
* examples/pop3client.c: Likewise.
* imap4d/util.c: Use new string functions.
* maidag/forward.c: Likewise.
* maidag/lmtp.c: Likewise.
* mh/mhn.c: Likewise.

* libproto/imap/folder.c: Remove unused local.
* libproto/mailer/smtp.c (smtp_writeline): Minor optimization.

@@ -44,6 +44,7 @@
 #include <mailutils/errno.h>
 #include <mailutils/errno.h>
 #include <mailutils/mutil.h>
 #include <mailutils/mutil.h>
 #include <mailutils/cctype.h>
 #include <mailutils/cctype.h>
+#include <mailutils/cstr.h>
 
 
 /* A structure which contains information on the commands this program
 /* A structure which contains information on the commands this program
    can understand. */
    can understand. */
@@ -87,7 +88,6 @@ int com_stat (char *);
 int com_verbose (char *);
 int com_verbose (char *);
 
 
 void initialize_readline (void);
 void initialize_readline (void);
-char *stripwhite (char *);
 COMMAND *find_command (char *);
 COMMAND *find_command (char *);
 char *dupstr (const char *);
 char *dupstr (const char *);
 int execute_line (char *);
 int execute_line (char *);
@@ -274,7 +274,7 @@ main (int argc MU_ARG_UNUSED, char **argv)
       /* Remove leading and trailing whitespace from the line.
       /* Remove leading and trailing whitespace from the line.
          Then, if there is anything left, add it to the history list
          Then, if there is anything left, add it to the history list
          and execute it. */
          and execute it. */
-      s = stripwhite (line);
+      s = mu_str_stripws (line);
 
 
       if (*s)
       if (*s)
 	{
 	{
@@ -294,45 +294,34 @@ main (int argc MU_ARG_UNUSED, char **argv)
 int
 int
 execute_line (char *line)
 execute_line (char *line)
 {
 {
-  register int i;
   COMMAND *command;
   COMMAND *command;
-  char *word;
+  char *word, *arg;
 
 
   /* Isolate the command word. */
   /* Isolate the command word. */
-  i = 0;
-  while (line[i] && mu_isblank (line[i]))
-    i++;
-  word = line + i;
-
-  while (line[i] && !mu_isblank (line[i]))
-    i++;
-
-  if (line[i])
-    line[i++] = '\0';
-
+  word = mu_str_skip_class (line, MU_CTYPE_SPACE);
+  arg = mu_str_skip_class_comp (word, MU_CTYPE_SPACE);
+  if (*arg)
+    {
+      *arg++ = 0;
+      arg = mu_str_skip_class (arg, MU_CTYPE_SPACE);
+    }
+      
   command = find_command (word);
   command = find_command (word);
 
 
   if (!command)
   if (!command)
     {
     {
-      fprintf (stderr, "%s: No such command for %s.\n", word, progname);
-      return (-1);
+      mu_error ("%s: No such command.", word);
+      return 0;
     }
     }
 
 
-  /* Get argument to command, if any. */
-  while (mu_isblank (line[i]))
-    i++;
-
-  word = line + i;
-
   /* Call the function. */
   /* Call the function. */
-  return ((*(command->func)) (word));
+  return ((*(command->func)) (arg));
 }
 }
 
 
 /* Look up NAME as the name of a command, and return a pointer to that
 /* Look up NAME as the name of a command, and return a pointer to that
    command.  Return a NULL pointer if NAME isn't a command name. */
    command.  Return a NULL pointer if NAME isn't a command name. */
 COMMAND *
 COMMAND *
-find_command (name)
-     char *name;
+find_command (char *name)
 {
 {
   register int i;
   register int i;
 
 
@@ -343,27 +332,6 @@ find_command (name)
   return ((COMMAND *) NULL);
   return ((COMMAND *) NULL);
 }
 }
 
 
-/* Strip whitespace from the start and end of STRING.  Return a pointer
-   into STRING. */
-char *
-stripwhite (char *string)
-{
-  register char *s, *t;
-
-  for (s = string; mu_isblank (*s); s++)
-    ;
-
-  if (*s == 0)
-    return (s);
-
-  t = s + strlen (s) - 1;
-  while (t > s && mu_isblank (*t))
-    t--;
-  *++t = '\0';
-
-  return s;
-}
-
 int
 int
 com_verbose (char *arg)
 com_verbose (char *arg)
 {
 {

@@ -46,6 +46,7 @@
 #include <mailutils/vartab.h>
 #include <mailutils/vartab.h>
 #include <mailutils/argcv.h>
 #include <mailutils/argcv.h>
 #include <mailutils/cctype.h>
 #include <mailutils/cctype.h>
+#include <mailutils/cstr.h>
 
 
 /* A structure which contains information on the commands this program
 /* A structure which contains information on the commands this program
    can understand. */
    can understand. */
@@ -80,7 +81,6 @@ int com_verbose (char *);
 int com_prompt (char *);
 int com_prompt (char *);
 
 
 void initialize_readline (void);
 void initialize_readline (void);
-char *stripwhite (char *);
 COMMAND *find_command (char *);
 COMMAND *find_command (char *);
 char *dupstr (const char *);
 char *dupstr (const char *);
 int execute_line (char *);
 int execute_line (char *);
@@ -322,7 +322,7 @@ main (int argc MU_ARG_UNUSED, char **argv)
       /* Remove leading and trailing whitespace from the line.
       /* Remove leading and trailing whitespace from the line.
          Then, if there is anything left, add it to the history list
          Then, if there is anything left, add it to the history list
          and execute it. */
          and execute it. */
-      s = stripwhite (line);
+      s = mu_str_stripws (line);
 
 
       if (*s)
       if (*s)
 	{
 	{
@@ -342,22 +342,18 @@ main (int argc MU_ARG_UNUSED, char **argv)
 int
 int
 execute_line (char *line)
 execute_line (char *line)
 {
 {
-  register int i;
   COMMAND *command;
   COMMAND *command;
-  char *word;
+  char *word, *arg;
 
 
   /* Isolate the command word. */
   /* Isolate the command word. */
-  i = 0;
-  while (line[i] && mu_isblank (line[i]))
-    i++;
-  word = line + i;
-
-  while (line[i] && !mu_isblank (line[i]))
-    i++;
-
-  if (line[i])
-    line[i++] = '\0';
-
+  word = mu_str_skip_class (line, MU_CTYPE_SPACE);
+  arg = mu_str_skip_class_comp (word, MU_CTYPE_SPACE);
+  if (*arg)
+    {
+      *arg++ = 0;
+      arg = mu_str_skip_class (arg, MU_CTYPE_SPACE);
+    }
+      
   command = find_command (word);
   command = find_command (word);
 
 
   if (!command)
   if (!command)
@@ -366,21 +362,14 @@ execute_line (char *line)
       return 0;
       return 0;
     }
     }
 
 
-  /* Get argument to command, if any. */
-  while (mu_isblank (line[i]))
-    i++;
-
-  word = line + i;
-
   /* Call the function. */
   /* Call the function. */
-  return ((*(command->func)) (word));
+  return ((*(command->func)) (arg));
 }
 }
 
 
 /* Look up NAME as the name of a command, and return a pointer to that
 /* Look up NAME as the name of a command, and return a pointer to that
    command.  Return a NULL pointer if NAME isn't a command name. */
    command.  Return a NULL pointer if NAME isn't a command name. */
 COMMAND *
 COMMAND *
-find_command (name)
-     char *name;
+find_command (char *name)
 {
 {
   register int i;
   register int i;
 
 
@@ -391,27 +380,6 @@ find_command (name)
   return ((COMMAND *) NULL);
   return ((COMMAND *) NULL);
 }
 }
 
 
-/* Strip whitespace from the start and end of STRING.  Return a pointer
-   into STRING. */
-char *
-stripwhite (char *string)
-{
-  register char *s, *t;
-
-  for (s = string; mu_isblank (*s); s++)
-    ;
-
-  if (*s == 0)
-    return (s);
-
-  t = s + strlen (s) - 1;
-  while (t > s && mu_isblank (*t))
-    t--;
-  *++t = '\0';
-
-  return s;
-}
-
 int
 int
 com_verbose (char *arg)
 com_verbose (char *arg)
 {
 {

@@ -1363,13 +1363,11 @@ imap4d_readline (struct imap4d_tokbuf *tok)
           char *p = mu_strcasestr (tok->buffer, "LOGIN");
           char *p = mu_strcasestr (tok->buffer, "LOGIN");
           if (p && p > tok->buffer && mu_isblank (p[-1]))
           if (p && p > tok->buffer && mu_isblank (p[-1]))
             {
             {
-              char *q = p + 5;
-              while (*q && mu_isblank (*q))
-                q++;
-              while (*q && !mu_isblank (*q))
-                q++;
+	      char *q = mu_str_skip_class (p + 5, MU_CTYPE_SPACE);
+	      q = mu_str_skip_class_comp (q, MU_CTYPE_SPACE);
               len = q - tok->buffer; 
               len = q - tok->buffer; 
-              mu_diag_output (MU_DIAG_DEBUG, "recv: %*.*s {censored}", len, len,
+              mu_diag_output (MU_DIAG_DEBUG,
+			      "recv: %*.*s {censored}", len, len,
                               tok->buffer);
                               tok->buffer);
              }
              }
            else
            else

@@ -38,7 +38,8 @@ char *mu_str_skip_cset (const char *str, const char *cset);
 
 
 char *mu_str_skip_class_comp (const char *str, int class);
 char *mu_str_skip_class_comp (const char *str, int class);
 char *mu_str_skip_cset_comp (const char *str, const char *cset);
 char *mu_str_skip_cset_comp (const char *str, const char *cset);
-  
+
+char *mu_str_stripws (char *string);  
   
   
 #ifdef __cplusplus
 #ifdef __cplusplus
 }
 }

@@ -1817,7 +1817,6 @@ imap_body (f_imap_t f_imap, char **ptr)
 	{
 	{
 	  size_t len = sep - *ptr;
 	  size_t len = sep - *ptr;
 	  char *section = malloc (len + 1);
 	  char *section = malloc (len + 1);
-	  char *p;
 	  
 	  
 	  if (!section)
 	  if (!section)
 	    return ENOMEM;
 	    return ENOMEM;

@@ -1067,14 +1067,15 @@ smtp_writeline (smtp_t smtp, const char *format, ...)
 
 
   smtp->ptr = smtp->buffer + len;
   smtp->ptr = smtp->buffer + len;
 
 
-  while (len > 0 && mu_isblank (smtp->buffer[len - 1]))
-    len--;
-
   if ((smtp->state != SMTP_SEND && smtp->state != SMTP_SEND_DOT)
   if ((smtp->state != SMTP_SEND && smtp->state != SMTP_SEND_DOT)
       || smtp->mailer->flags & MAILER_FLAG_DEBUG_DATA)
       || smtp->mailer->flags & MAILER_FLAG_DEBUG_DATA)
-    MU_DEBUG2 (smtp->mailer->debug, MU_DEBUG_PROT, "> %.*s\n", len,
-               smtp->buffer);
-
+    {
+      while (len > 0 && mu_isblank (smtp->buffer[len - 1]))
+	len--;
+      MU_DEBUG2 (smtp->mailer->debug, MU_DEBUG_PROT, "> %.*s\n", len,
+		 smtp->buffer);
+    }
+  
   return 0;
   return 0;
 }
 }
 
 

@@ -220,19 +220,11 @@ process_forward (mu_message_t msg, char *filename, const char *myname)
 
 
   while (getline (&buf, &size, fp) > 0)
   while (getline (&buf, &size, fp) > 0)
     {
     {
-      char *p, *q;
-      for (p = buf; *p && mu_isblank (*p); p++)
-	;
-      q = p + strlen (p);
-      if (q > p)
-	{
-	  if (*--q == '\n')
-	    q--;
-	  for (; q > p && mu_isblank (*q); q--)
-	    ;
-	  q[1] = 0;
-	}
-      
+      char *p;
+
+      mu_rtrim_class (buf, MU_CTYPE_SPACE);
+      p = mu_str_skip_class (buf, MU_CTYPE_SPACE);
+
       if (*p && *p != '#')
       if (*p && *p != '#')
 	{
 	{
 	  if (strchr (p, '@'))
 	  if (strchr (p, '@'))

@@ -77,16 +77,6 @@ lmtp_reply (FILE *fp, char *code, char *enh, char *fmt, ...)
 }
 }
 
 
 void
 void
-trimnl (char *arg)
-{
-  size_t len = strlen (arg);
-  if (len > 0 && arg[len-1] == '\n')
-    arg[--len] = 0;
-  if (len > 0 && arg[len-1] == '\r')
-    arg[--len] = 0;
-}
-
-void
 xlatnl (char *arg)
 xlatnl (char *arg)
 {
 {
   size_t len = strlen (arg);
   size_t len = strlen (arg);
@@ -543,7 +533,7 @@ lmtp_loop (FILE *in, FILE *out, unsigned int timeout)
 	  enum lmtp_command cmd = cp->cmd_code;
 	  enum lmtp_command cmd = cp->cmd_code;
 	  enum lmtp_state next_state = transtab[cmd][state];
 	  enum lmtp_state next_state = transtab[cmd][state];
 
 
-	  trimnl (buf);
+	  mu_rtrim_cset (sp, "\r\n");
 
 
 	  if (lmtp_transcript)
 	  if (lmtp_transcript)
 	    mu_diag_output (MU_DIAG_INFO, "LMTP recieve: %s", buf);
 	    mu_diag_output (MU_DIAG_INFO, "LMTP recieve: %s", buf);
@@ -552,8 +542,7 @@ lmtp_loop (FILE *in, FILE *out, unsigned int timeout)
 	    {
 	    {
 	      if (cp->cmd_fun)
 	      if (cp->cmd_fun)
 		{
 		{
-		  while (*sp && mu_isblank (*sp))
-		    sp++;
+		  sp = mu_str_skip_class (sp, MU_CTYPE_SPACE);
 		  if (cp->cmd_fun (out, sp))
 		  if (cp->cmd_fun (out, sp))
 		    continue;
 		    continue;
 		}
 		}

@@ -529,7 +529,7 @@ mail_mainloop (char *(*input) (void *, int),
 	  command = buf;
 	  command = buf;
 	  len = strlen (command);
 	  len = strlen (command);
 	}
 	}
-      cmd = util_stripwhite (command);
+      cmd = mu_str_stripws (command);
       util_do_command ("%s", cmd);
       util_do_command ("%s", cmd);
 #ifdef WITH_READLINE
 #ifdef WITH_READLINE
       if (do_history && !(mu_isspace(cmd[0]) || cmd[0] == '#'))
       if (do_history && !(mu_isspace(cmd[0]) || cmd[0] == '#'))

@@ -313,7 +313,6 @@ extern size_t util_range_msg (size_t low, size_t high, int flags,
 			      msg_handler_t func, void *data);
 			      msg_handler_t func, void *data);
 
 
 extern function_t* util_command_get (const char *cmd);
 extern function_t* util_command_get (const char *cmd);
-extern char *util_stripwhite (char *string);
 
 
 extern void *util_find_entry (void *table, size_t nmemb, size_t size,
 extern void *util_find_entry (void *table, size_t nmemb, size_t size,
 			      const char *cmd);
 			      const char *cmd);

@@ -336,24 +336,6 @@ util_command_list (void *table, size_t nmemb, size_t size)
 }
 }
 
 
 /*
 /*
- * removes whitespace from the beginning and end of a string
- */
-char *
-util_stripwhite (char *string)
-{
-  register char *s, *t;
-  for (s = string; mu_isspace ((unsigned)*s); s++)
-    ;
-  if (*s == 0)
-    return s;
-  t = s + strlen (s) - 1;
-  while (t > s && mu_isspace ((unsigned)*t))
-    t--;
-  *++t = '\0';
-  return s;
-}
-
-/*
  * Get the number of columns on the screen
  * Get the number of columns on the screen
  * First try an ioctl() call not all shells set the COLUMNS environ.
  * First try an ioctl() call not all shells set the COLUMNS environ.
  */
  */

@@ -123,6 +123,7 @@ libmailutils_la_SOURCES = \
  stream.c\
  stream.c\
  strltrim.c\
  strltrim.c\
  strskip.c\
  strskip.c\
+ stripws.c\
  strrtrim.c\
  strrtrim.c\
  syslog.c\
  syslog.c\
  system.c\
  system.c\

@@ -50,7 +50,6 @@ struct _mu_mailcap
 
 
 static int mu_mailcap_parse (mu_mailcap_t mailcap, mu_stream_t stream);
 static int mu_mailcap_parse (mu_mailcap_t mailcap, mu_stream_t stream);
 static int mu_mailcap_parse_entry (mu_mailcap_entry_t entry, char *buffer);
 static int mu_mailcap_parse_entry (mu_mailcap_entry_t entry, char *buffer);
-static char * stripwhite (char *string);
 static char * tokenize (char *s, char **save_ptr);
 static char * tokenize (char *s, char **save_ptr);
 
 
 int
 int
@@ -371,8 +370,8 @@ mu_mailcap_entry_get_value (mu_mailcap_entry_t entry, const char *key,
 		      if (value != NULL)
 		      if (value != NULL)
 			{
 			{
 			  value++; /* Pass the equal.  */
 			  value++; /* Pass the equal.  */
-			  /* Remove prepend space.  */
-			  for (; mu_isspace ((unsigned char)*value); value++)
+			  /* Remove leading space.  */
+			  for (; mu_isspace (*value); value++)
 			    ;
 			    ;
 			  len = strlen (value);
 			  len = strlen (value);
 			  /* Strip surrounding double quotes */
 			  /* Strip surrounding double quotes */
@@ -400,27 +399,6 @@ mu_mailcap_entry_get_value (mu_mailcap_entry_t entry, const char *key,
   return status;
   return status;
 }
 }
 
 
-/* Strip whitespace from the start and end of STRING.  Return a pointer
-   into STRING. */
-static char *
-stripwhite (char *string)
-{
-  register char *s, *t;
-
-  for (s = string; mu_isspace ((unsigned char)*s); s++)
-    ;
-
-  if (*s == 0)
-    return (s);
-
-  t = s + strlen (s) - 1;
-  while (t > s && mu_isspace (*t))
-    t--;
-  *++t = '\0';
-
-  return s;
-}
-
 /*
 /*
  * break the line on ';'.  Same as strtok() but
  * break the line on ';'.  Same as strtok() but
  * check for escaped "\;"
  * check for escaped "\;"
@@ -479,12 +457,12 @@ mu_mailcap_parse_entry (mu_mailcap_entry_t entry, char *buffer)
 	{
 	{
 	  /* The first entry in a mailcap line is the typefield.  */
 	  /* The first entry in a mailcap line is the typefield.  */
 	case 0:
 	case 0:
-	  entry->typefield = strdup (stripwhite (token));
+	  entry->typefield = strdup (mu_str_stripws (token));
 	  break;
 	  break;
 
 
 	  /* The second entry in a mailcap line is the view-command.  */
 	  /* The second entry in a mailcap line is the view-command.  */
 	case 1:
 	case 1:
-	  entry->viewcommand = strdup (stripwhite(token));
+	  entry->viewcommand = strdup (mu_str_stripws (token));
 	  break;
 	  break;
 
 
 	  /* The rest are the optional fields.  */
 	  /* The rest are the optional fields.  */
@@ -496,7 +474,8 @@ mu_mailcap_parse_entry (mu_mailcap_entry_t entry, char *buffer)
 	    if (fields != NULL)
 	    if (fields != NULL)
 	      {
 	      {
 		entry->fields = fields;
 		entry->fields = fields;
-		entry->fields[entry->fields_count] = strdup (stripwhite (token));
+		entry->fields[entry->fields_count] =
+		  strdup (mu_str_stripws (token));
 		entry->fields_count++;
 		entry->fields_count++;
 	      }
 	      }
 	  }
 	  }
@@ -643,7 +622,7 @@ mu_mailcap_parse (mu_mailcap_t mailcap, mu_stream_t stream)
       /* Parse the well-form mailcap line entry.  */
       /* Parse the well-form mailcap line entry.  */
       if (previous == NULL) {
       if (previous == NULL) {
 	/* Nuke the trailing/prepend spaces.  */
 	/* Nuke the trailing/prepend spaces.  */
-	char *line = stripwhite(buffer);
+	char *line = mu_str_stripws (buffer);
 	/* Ignore comments or empty lines  */
 	/* Ignore comments or empty lines  */
 	if (*line != '#' && *line != '\0')
 	if (*line != '#' && *line != '\0')
 	  {
 	  {

@@ -133,31 +133,7 @@ _mime_append_part (mu_mime_t mime, mu_message_t msg, int offset, int len, int li
   return 0;
   return 0;
 }
 }
 
 
-static char *
-_strltrim (char *str)
-{
-  char *p;
-
-  for (p = str; mu_isspace (*p) && *p != '\0'; ++p);
-  return ((p != str) ? memmove (str, p, strlen (p) + 1) : str);
-}
-
-static char *
-_strttrim (char *str)
-{
-  char *p;
-
-  for (p = str + strlen (str) - 1;
-       mu_isspace (*p) && p >= str; --p);
-  *++p = '\0';
-  return (str);
-}
-
-char *_strtrim (char *str);
-
-#define _strtrim(str) _strltrim(_strttrim(str))
-
-#define _ISSPECIAL(c) ( \
+#define _ISSPECIAL(c) (						 \
     ((c) == '(') || ((c) == ')') || ((c) == '<') || ((c) == '>') \
     ((c) == '(') || ((c) == ')') || ((c) == '<') || ((c) == '>') \
     || ((c) == '@') || ((c) == ',') || ((c) == ';') || ((c) == ':') \
     || ((c) == '@') || ((c) == ',') || ((c) == ';') || ((c) == ':') \
     || ((c) == '\\') || ((c) == '.') || ((c) == '[') \
     || ((c) == '\\') || ((c) == '.') || ((c) == '[') \
@@ -169,7 +145,7 @@ _mime_munge_content_header (char *field_body)
   char           *p, *e, *str = field_body;
   char           *p, *e, *str = field_body;
   int             quoted = 0;
   int             quoted = 0;
 
 
-  _strtrim (field_body);
+  mu_str_stripws (field_body);
 
 
   if ((e = strchr (str, ';')) == NULL)
   if ((e = strchr (str, ';')) == NULL)
     return;
     return;

+/* This file is part of GNU Mailutils
+   Copyright (C) 2009 Free Software Foundation, Inc.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 3 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General
+   Public License along with this library.  If not, see
+   <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <stdlib.h>
+#include <mailutils/cctype.h>
+#include <mailutils/cstr.h>
+
+/*
+ * removes whitespace from the beginning and end of a string
+ */
+char *
+mu_str_stripws (char *string)
+{
+  mu_rtrim_class (string, MU_CTYPE_SPACE);
+  return mu_str_skip_class (string, MU_CTYPE_SPACE);
+}

@@ -480,7 +480,7 @@ yylex ()
 	{
 	{
 	  curp -= rest;
 	  curp -= rest;
 	  yylval.builtin = bp;
 	  yylval.builtin = bp;
-	  while (*curp && mu_isspace(*curp))
+	  while (*curp && mu_isspace (*curp))
 	    curp++;
 	    curp++;
 	  return FUNCTION;
 	  return FUNCTION;
 	}
 	}

@@ -617,8 +617,7 @@ mhn_compose_command (char *typestr, int *flags, char *file)
     %s  subtype */
     %s  subtype */
 
 
   obstack_init (&stk);
   obstack_init (&stk);
-  for (p = str; *p && mu_isspace (*p); p++)
-    ;
+  p = mu_str_skip_class (str, MU_CTYPE_SPACE);
   
   
   if (*p == '|')
   if (*p == '|')
     p++;
     p++;
@@ -661,12 +660,11 @@ mhn_compose_command (char *typestr, int *flags, char *file)
   free (subtype);
   free (subtype);
 
 
   str = obstack_finish (&stk);
   str = obstack_finish (&stk);
-  for (p = str; *p && mu_isspace (*p); p++)
-    ;
+  p = mu_str_skip_class (str, MU_CTYPE_SPACE);
   if (!*p)
   if (!*p)
     str = NULL;
     str = NULL;
   else
   else
-    str = strdup (str);
+    str = strdup (p);
 
 
   obstack_free (&stk, NULL);
   obstack_free (&stk, NULL);
   return (char*) str;
   return (char*) str;
@@ -700,8 +698,7 @@ mhn_show_command (mu_message_t msg, msg_part_t part, int *flags,
     %d  content description */
     %d  content description */
 
 
   obstack_init (&stk);
   obstack_init (&stk);
-  for (p = str; *p && mu_isspace (*p); p++)
-    ;
+  p = mu_str_skip_class (str, MU_CTYPE_SPACE);
   
   
   if (*p == '|')
   if (*p == '|')
     p++;
     p++;
@@ -777,12 +774,11 @@ mhn_show_command (mu_message_t msg, msg_part_t part, int *flags,
   free (subtype);
   free (subtype);
 
 
   str = obstack_finish (&stk);
   str = obstack_finish (&stk);
-  for (p = str; *p && mu_isspace (*p); p++)
-    ;
+  p = mu_str_skip_class (str, MU_CTYPE_SPACE);
   if (!*p)
   if (!*p)
     str = NULL;
     str = NULL;
   else
   else
-    str = strdup (str);
+    str = strdup (p);
 
 
   obstack_free (&stk, NULL);
   obstack_free (&stk, NULL);
   return (char*) str;
   return (char*) str;
@@ -869,12 +865,11 @@ mhn_store_command (mu_message_t msg, msg_part_t part, char *name)
   free (subtype);
   free (subtype);
   
   
   str = obstack_finish (&stk);
   str = obstack_finish (&stk);
-  for (p = str; *p && mu_isspace (*p); p++)
-    ;
+  p = mu_str_skip_class (str, MU_CTYPE_SPACE);
   if (!*p)
   if (!*p)
     str = NULL;
     str = NULL;
   else
   else
-    str = strdup (str);
+    str = strdup (p);
   
   
   obstack_free (&stk, NULL);
   obstack_free (&stk, NULL);
   return (char*) str;
   return (char*) str;
@@ -985,9 +980,8 @@ get_extbody_params (mu_message_t msg, char **content, char **descr)
 	  && mu_c_strncasecmp (buf, MU_HEADER_CONTENT_DESCRIPTION ":",
 	  && mu_c_strncasecmp (buf, MU_HEADER_CONTENT_DESCRIPTION ":",
 			       sizeof (MU_HEADER_CONTENT_DESCRIPTION)) == 0)
 			       sizeof (MU_HEADER_CONTENT_DESCRIPTION)) == 0)
 	{
 	{
-	  for (p = buf + sizeof (MU_HEADER_CONTENT_DESCRIPTION);
-	       *p && mu_isspace (*p); p++)
-	    ;
+	  p = mu_str_skip_class (buf + sizeof (MU_HEADER_CONTENT_DESCRIPTION),
+				 MU_CTYPE_SPACE);
 	  *descr = strdup (p);
 	  *descr = strdup (p);
 	}
 	}
       else if (content
       else if (content
@@ -995,9 +989,8 @@ get_extbody_params (mu_message_t msg, char **content, char **descr)
 			            sizeof (MU_HEADER_CONTENT_TYPE)) == 0)
 			            sizeof (MU_HEADER_CONTENT_TYPE)) == 0)
 	{
 	{
 	  char *q;
 	  char *q;
-	  for (p = buf + sizeof (MU_HEADER_CONTENT_TYPE);
-	       *p && mu_isspace (*p); p++)
-	    ;
+	  p = mu_str_skip_class (buf + sizeof (MU_HEADER_CONTENT_TYPE),
+				 MU_CTYPE_SPACE);
 	  q = strchr (p, ';');
 	  q = strchr (p, ';');
 	  if (q)
 	  if (q)
 	    *q = 0;
 	    *q = 0;
@@ -1830,7 +1823,7 @@ parse_brace (char **pval, char **cmd, int c, struct compose_env *env)
 }
 }
 
 
 #define isdelim(c) (mu_isspace (c) || strchr (";<[(", c))
 #define isdelim(c) (mu_isspace (c) || strchr (";<[(", c))
-#define skipws(ptr) do { while (*ptr && mu_isspace (*ptr)) ptr++; } while (0)
+#define skipws(ptr) (ptr) = mu_str_skip_class (ptr, MU_CTYPE_SPACE)
 
 
 int
 int
 parse_content_type (struct compose_env *env,
 parse_content_type (struct compose_env *env,
@@ -2300,10 +2293,8 @@ edit_mime (char *cmd, struct compose_env *env, mu_message_t *msg, int level)
   rc = parse_type_command (&cmd, env, hdr);
   rc = parse_type_command (&cmd, env, hdr);
   if (rc)
   if (rc)
     return 1;
     return 1;
-  
-  for (p = cmd + strlen (cmd) - 1; p > cmd && mu_isspace (*p); p--)
-    ;
-  p[1] = 0;
+
+  mu_rtrim_class (cmd, MU_CTYPE_SPACE);
 
 
   _get_content_type (hdr, &typestr, NULL);
   _get_content_type (hdr, &typestr, NULL);
   shell_cmd = mhn_compose_command (typestr, &flags, cmd);
   shell_cmd = mhn_compose_command (typestr, &flags, cmd);
@@ -2463,9 +2454,8 @@ mhn_edit (struct compose_env *env, int level)
 		finish_text_msg (env, &msg, ascii_buf);
 		finish_text_msg (env, &msg, ascii_buf);
 	      
 	      
 	      /* Execute the directive */
 	      /* Execute the directive */
-	      tok = sp = buf;
-	      while (*sp && !mu_isspace (*sp))
-		sp++;
+	      tok = buf;
+	      sp = mu_str_skip_class_comp (buf, MU_CTYPE_SPACE);
 	      c = *sp;
 	      c = *sp;
 	      *sp = 0;
 	      *sp = 0;