Revise error messages for accordance with GNU standards:

begin messages with a capital letter, unless they are prefixed
with `file:line:' or their exact look is important due to
compatibility reasons. Do not end messages with a period.
Avoid using contracted negations.

14 files changed, 55 insertions, 51 deletions

diff --git a/mail/alt.c b/mail/alt.c
index a07b49ea8..38e6754dd 100644
--- a/mail/alt.c
+++ b/mail/alt.c
@@ -60,7 +60,7 @@ mail_set_my_name (char *name)
       struct passwd *pw = getpwuid (getuid ());
       if (!pw)
 	{
-	  util_error (_("can't determine my username"));
+	  util_error (_("Cannot determine my username"));
 	  exit (1);
 	}
       name = pw->pw_name;
@@ -69,7 +69,8 @@ mail_set_my_name (char *name)
   my_email = mu_get_user_email (name);
   if (!my_email)
     {
-      util_error(_("can't determine my email address: %s"), mu_strerror (errno));
+      util_error(_("Cannot determine my email address: %s"),
+		 mu_strerror (errno));
       exit (1);
     }
 }
diff --git a/mail/copy.c b/mail/copy.c
index ce86a04f9..2749f82de 100644
--- a/mail/copy.c
+++ b/mail/copy.c
@@ -65,7 +65,7 @@ mail_copy0 (int argc, char **argv, int mark)
   if (mailbox_create_default (&mbx, filename)
       || mailbox_open (mbx, MU_STREAM_WRITE | MU_STREAM_CREAT))
     {
-      util_error (_("can't create mailbox %s"), filename);
+      util_error (_("Cannot create mailbox %s"), filename);
       free (filename);
       msgset_free (msglist);
       return 1;
@@ -80,7 +80,7 @@ mail_copy0 (int argc, char **argv, int mark)
       status = mailbox_append_message (mbx, msg);
       if (status)
 	{
-	  util_error (_("can't append message: %s"), mu_strerror (status));
+	  util_error (_("Cannot append message: %s"), mu_strerror (status));
 	  break;
 	}
       
diff --git a/mail/decode.c b/mail/decode.c
index 6b2bd18bb..33ecb890f 100644
--- a/mail/decode.c
+++ b/mail/decode.c
@@ -142,7 +142,7 @@ display_part_header (FILE *out, const msgset_t *msgset,
   fprintf (out, "\n");
 
   fprintf (out, _("| Type=%s\n"), type);
-  fprintf (out, _("| encoding=%s\n"), encoding);
+  fprintf (out, _("| Encoding=%s\n"), encoding);
   fputc ('+', out);
   for (i = 0; (int)i <= size; i++)
     fputc ('-', out);
diff --git a/mail/file.c b/mail/file.c
index d1ced5b25..a141af350 100644
--- a/mail/file.c
+++ b/mail/file.c
@@ -88,7 +88,7 @@ mail_file (int argc, char **argv)
 	  || (status = mailbox_open (newbox, MU_STREAM_RDWR)) != 0)
 	{
 	  mailbox_destroy (&newbox);
-	  util_error(_("can't open mailbox %s: %s"), name, mu_strerror (status));
+	  util_error(_("Cannot open mailbox %s: %s"), name, mu_strerror (status));
 	  free (name);
 	  return 1;
 	}
@@ -122,7 +122,7 @@ mail_file (int argc, char **argv)
     }
   else
     {
-      util_error(_("%s takes only one arg"), argv[0]);
+      util_error(_("%s takes only one argument"), argv[0]);
     }
   return 1;
 }
diff --git a/mail/if.c b/mail/if.c
index fc959b294..532e6f1fb 100644
--- a/mail/if.c
+++ b/mail/if.c
@@ -52,7 +52,7 @@ _cond_push(int val)
 
   if (!_cond_stack)
     {
-      util_error(_("not enough memory"));
+      util_error(_("Not enough memory"));
       exit (EXIT_FAILURE);
     }
   _cond_stack[_cond_level++] = val;
@@ -63,7 +63,7 @@ _cond_pop()
 {
   if (_cond_level == 0)
     {
-      util_error(_("internal error: condition stack underflow"));
+      util_error(_("Internal error: condition stack underflow"));
       abort();
     }
   return _cond_stack[--_cond_level];
@@ -92,7 +92,7 @@ mail_if (int argc, char **argv)
 
   if (argv[1][1] != 0)
     {
-      util_error(_("valid if arguments are: s | r | t"));
+      util_error(_("Valid if arguments are: s | r | t"));
       return 1;
     }
 
@@ -116,7 +116,7 @@ mail_if (int argc, char **argv)
 	  cond = isatty (fileno (stdout));
 	  break;
 	default:
-	  util_error(_("valid if arguments are: s | r | t"));
+	  util_error(_("Valid if arguments are: s | r | t"));
 	  return 1;
 	}
     }
diff --git a/mail/mail.c b/mail/mail.c
index f7087baf7..206389335 100644
--- a/mail/mail.c
+++ b/mail/mail.c
@@ -398,14 +398,14 @@ main (int argc, char **argv)
 	    rc = mailbox_create_default (&mbox, NULL);
 	  if (rc != 0)
 	    {
-	      util_error (_("Can not create mailbox for %s: %s"), args.user,
+	      util_error (_("Cannot create mailbox for %s: %s"), args.user,
 			  mu_strerror (rc));
 	      exit (EXIT_FAILURE);
 	    }
 	}
       else if ((rc = mailbox_create_default (&mbox, args.file)) != 0)
 	{
-	  util_error (_("Can not create mailbox %s: %s"), args.file,
+	  util_error (_("Cannot create mailbox %s: %s"), args.file,
 		      mu_strerror (rc));
 	  exit (EXIT_FAILURE);
 	}
@@ -422,7 +422,7 @@ main (int argc, char **argv)
 	{
 	  url_t url = NULL;
 	  mailbox_get_url (mbox, &url);
-	  util_error (_("Can not open mailbox %s: %s"),
+	  util_error (_("Cannot open mailbox %s: %s"),
 		      url_to_string (url), mu_strerror (rc));
 	  mailbox_destroy (&mbox);
 	  exit (EXIT_FAILURE);
@@ -436,7 +436,7 @@ main (int argc, char **argv)
 	    {
 	      url_t url = NULL;
 	      mailbox_get_url (mbox, &url);
-	      util_error (_("Can not read mailbox %s: %s"),
+	      util_error (_("Cannot read mailbox %s: %s"),
 			  url_to_string (url), mu_strerror (rc));
 	      exit (EXIT_FAILURE);
 	    }
diff --git a/mail/mailline.c b/mail/mailline.c
index 3c827c6a3..b9f4174e4 100644
--- a/mail/mailline.c
+++ b/mail/mailline.c
@@ -398,7 +398,7 @@ ml_reread (const char *prompt, char **text)
 
   if (!line)
     {
-      util_error (_("not enough memory to edit the line"));
+      util_error (_("Not enough memory to edit the line"));
       return -1;
     }
 
@@ -426,7 +426,7 @@ ml_reread (const char *prompt, char **text)
 	  if ((p = realloc (line, line_size + LINE_INC)) == NULL)
 	    {
 	      fputs ("\n", stdout);
-	      util_error (_("not enough memory to edit the line"));
+	      util_error (_("Not enough memory to edit the line"));
 	      break;
 	    }
 	  else
@@ -473,7 +473,7 @@ ml_reread (const char *prompt, char **text)
 	      if ((p = realloc (line, line_size + LINE_INC)) == NULL)
 		{
 		  fputs ("\n", stdout);
-		  util_error (_("not enough memory to edit the line"));
+		  util_error (_("Not enough memory to edit the line"));
 		  break;
 		}
 	      else
@@ -509,7 +509,7 @@ ml_reread (const char *prompt, char **text)
 	  if ((p = realloc (line, line_size + LINE_INC)) == NULL)
 	    {
 	      fputs ("\n", stdout);
-	      util_error (_("not enough memory to edit the line"));
+	      util_error (_("Not enough memory to edit the line"));
 	      break;
 	    }
 	  else
diff --git a/mail/quit.c b/mail/quit.c
index 1049fa173..8e1b70b03 100644
--- a/mail/quit.c
+++ b/mail/quit.c
@@ -108,14 +108,14 @@ mail_mbox_commit ()
 		  || mailbox_open (dest_mbox,
 				   MU_STREAM_WRITE | MU_STREAM_CREAT))
 		{
-		  util_error (_("can't create mailbox %s"), name);
+		  util_error (_("Cannot create mailbox %s"), name);
 		  return 1;
 		}
 	    }
 
 	  status = mailbox_append_message (dest_mbox, msg);
 	  if (status)
-	    util_error (_("can't append message: %s"), mu_strerror (status));
+	    util_error (_("Cannot append message: %s"), mu_strerror (status));
 	  else
 	    {
 	      attribute_set_deleted (attr);
diff --git a/mail/send.c b/mail/send.c
index ca1526ab9..9a0b78264 100644
--- a/mail/send.c
+++ b/mail/send.c
@@ -221,7 +221,7 @@ compose_header_set (compose_env_t * env, char *name, char *value, int mode)
   if (!env->header
       && (status = header_create (&env->header, NULL, 0, NULL)) != 0)
     {
-      util_error (_("can't create header: %s"), mu_strerror (status));
+      util_error (_("Cannot create header: %s"), mu_strerror (status));
       return status;
     }
 
@@ -304,7 +304,7 @@ mail_send0 (compose_env_t * env, int save_to)
 
   if (fd == -1)
     {
-      util_error (_("Can not open temporary file"));
+      util_error (_("Cannot open temporary file"));
       return 1;
     }
 
@@ -395,7 +395,7 @@ mail_send0 (compose_env_t * env, int save_to)
 		}
 	      else
 		{
-		  util_error (_("can't parse escape sequence"));
+		  util_error (_("Cannot parse escape sequence"));
 		}
 	      argcv_free (argc, argv);
 
@@ -420,7 +420,7 @@ mail_send0 (compose_env_t * env, int save_to)
 
 	  if (!fp)
 	    {
-	      util_error (_("can't open file %s: %s"), getenv ("DEAD"),
+	      util_error (_("Cannot open file %s: %s"), getenv ("DEAD"),
 			  strerror (errno));
 	    }
 	  else
@@ -531,14 +531,14 @@ mail_send0 (compose_env_t * env, int save_to)
 			    {
 			      status = mailbox_append_message (mbx, msg);
 			      if (status)
-				util_error (_("can't append message: %s"),
+				util_error (_("Cannot append message: %s"),
 					    mu_strerror (status));
 			      mailbox_close (mbx);
 			    }
 			  mailbox_destroy (&mbx);
 			}
 		      if (status)
-			util_error (_("can't create mailbox %s"), env->outfiles[i]);
+			util_error (_("Cannot create mailbox %s"), env->outfiles[i]);
 		    }
 		}
 	    }
@@ -574,7 +574,7 @@ mail_send0 (compose_env_t * env, int save_to)
 		    msg_to_pipe (sendmail, msg);
 		}
 	      else
-		util_error (_("variable sendmail not set: no mailer"));
+		util_error (_("Variable sendmail not set: no mailer"));
 	    }
 	  message_destroy (&msg, NULL);
 	  remove (filename);
diff --git a/mail/source.c b/mail/source.c
index 519b93ca3..53818f39d 100644
--- a/mail/source.c
+++ b/mail/source.c
@@ -47,6 +47,7 @@ mail_source (int argc, char **argv)
   
   if (argc != 2)
     {
+      /* TRANSLATORS: 'source' is a command name. Do not translate it! */
       util_error (_("source requires an argument"));
       return 1;
     }
@@ -55,7 +56,7 @@ mail_source (int argc, char **argv)
   if (!fp)
     {
       if (errno != ENOENT)
-	util_error(_("can't open `%s': %s"), argv[1], strerror(errno));
+	util_error(_("Cannot open `%s': %s"), argv[1], strerror(errno));
       return 1;
     }
 
diff --git a/mail/unalias.c b/mail/unalias.c
index 1259e09f3..d46b327df 100644
--- a/mail/unalias.c
+++ b/mail/unalias.c
@@ -26,6 +26,7 @@ mail_unalias (int argc, char **argv)
 {
   if (argc == 1)
     {
+      /* TRANSLATORS: 'unalias' is a command name. Do not translate it! */
       util_error (_("unalias requires at least one argument"));
       return 1;
     }
diff --git a/mail/util.c b/mail/util.c
index 9a5ff6c04..f80fe9878 100644
--- a/mail/util.c
+++ b/mail/util.c
@@ -611,7 +611,7 @@ util_get_homedir ()
   if (!homedir)
     {
       /* Shouldn't happen, but one never knows */
-      util_error (_("can't get homedir"));
+      util_error (_("Cannot get homedir"));
       exit (EXIT_FAILURE);
     }
   return homedir;
@@ -673,14 +673,14 @@ util_get_sender (int msgno, int strip)
       if (envelope_sender (env, buffer, sizeof (buffer), NULL)
 	  || address_create (&addr, buffer))
 	{
-	  util_error (_("can't determine sender name (msg %d)"), msgno);
+	  util_error (_("Cannot determine sender name (msg %d)"), msgno);
 	  return NULL;
 	}
     }
 
   if (address_aget_email (addr, 1, &buf))
     {
-      util_error (_("can't determine sender name (msg %d)"), msgno);
+      util_error (_("Cannot determine sender name (msg %d)"), msgno);
       address_destroy (&addr);
       return NULL;
     }
@@ -747,7 +747,7 @@ util_slist_add (list_t *list, char *value)
 
   if ((p = strdup(value)) == NULL)
     {
-      util_error(_("not enough memory\n"));
+      util_error(_("Not enough memory"));
       return;
     }
   list_append (*list, p);
@@ -923,7 +923,7 @@ util_save_outgoing (message_t msg, char *savefile)
       outfile = fopen (filename, "a");
       if (!outfile)
 	{
-	  util_error(_("can't open save file %s: %s"),
+	  util_error(_("Cannot open save file %s: %s"),
 		     filename, strerror (errno));
 	}
       else
@@ -940,7 +940,7 @@ util_save_outgoing (message_t msg, char *savefile)
 
 	  if (!bsize)
 	    {
-	      util_error(_("not enough memory for creating save file"));
+	      util_error(_("Not enough memory for creating save file"));
 	    }
 	  else
 	    {
@@ -1050,7 +1050,7 @@ util_descend_subparts (message_t mesg, msgset_t *msgset, message_t *part)
 	{
 	  if (message_unencapsulate (mesg, &submsg, NULL))
 	    {
-	      util_error (_("can't unencapsulate message/part"));
+	      util_error (_("Cannot unencapsulate message/part"));
 	      return 1;
 	    }
 	  mesg = submsg;
@@ -1059,14 +1059,14 @@ util_descend_subparts (message_t mesg, msgset_t *msgset, message_t *part)
       message_get_num_parts (mesg, &nparts);
       if (nparts < msgset->msg_part[i])
 	{
-	  util_error (_("no such (sub)part in the message: %d"),
+	  util_error (_("No such (sub)part in the message: %d"),
 		      msgset->msg_part[i]);
 	  return 1;
 	}
 
       if (message_get_part (mesg, msgset->msg_part[i], &submsg))
 	{
-	  util_error (_("can't get (sub)part from the message: %d"),
+	  util_error (_("Cannot get (sub)part from the message: %d"),
 		      msgset->msg_part[i]);
 	  return 1;
 	}
@@ -1190,7 +1190,7 @@ util_header_expand (header_t *phdr)
   rc = header_create (&hdr, "", 0, NULL);
   if (rc)
     {
-      util_error (_("can't create temporary header: %s"), mu_strerror (rc));
+      util_error (_("Cannot create temporary header: %s"), mu_strerror (rc));
       return 1;
     }
       
@@ -1231,10 +1231,10 @@ util_header_expand (header_t *phdr)
 		{
 		  errcnt++;
 		  if (exp)
-		    util_error (_("can't parse address `%s' (while expanding `%s'): %s"),
+		    util_error (_("Cannot parse address `%s' (while expanding `%s'): %s"),
 				exp, p, mu_strerror (rc));
 		  else
-		    util_error (_("can't parse address `%s': %s"),
+		    util_error (_("Cannot parse address `%s': %s"),
 				p, mu_strerror (rc));
 		}
 	      
@@ -1287,7 +1287,7 @@ util_get_message (mailbox_t mbox, size_t msgno, message_t *msg)
   status = mailbox_get_message (mbox, msgno, msg);
   if (status)
     {
-      util_error (_("can't get message %lu: %s"),
+      util_error (_("Cannot get message %lu: %s"),
 		  (unsigned long) msgno, mu_strerror (status));
       return status;
     }
@@ -1384,7 +1384,7 @@ util_rfc2047_decode (char **value)
   if (rc)
     {
       if (util_getenv (NULL, "verbose", Mail_env_boolean, 0) == 0)
-	mu_error (_("Can't decode line `%s': %s"), *value, mu_strerror (rc));
+	mu_error (_("Cannot decode line `%s': %s"), *value, mu_strerror (rc));
     }
   else
     {
diff --git a/mail/var.c b/mail/var.c
index f959e8b02..b97546e19 100644
--- a/mail/var.c
+++ b/mail/var.c
@@ -55,7 +55,7 @@ parse_headers (FILE *fp, compose_env_t *env)
   
   if ((status = header_create (&header, NULL, 0, NULL)) != 0)
     {
-      util_error (_("can't create header: %s"), mu_strerror (status));
+      util_error (_("Cannot create header: %s"), mu_strerror (status));
       return 1;
     }
 
@@ -248,7 +248,7 @@ var_sign (int argc ARG_UNUSED, char **argv, compose_env_t *env ARG_UNUSED)
 
 	  if (!fp)
 	    {
-	      util_error (_("can't open %s: %s"), name, strerror (errno));
+	      util_error (_("Cannot open %s: %s"), name, strerror (errno));
 	      free (name);
 	    }
 
@@ -547,7 +547,7 @@ var_read (int argc, char **argv, compose_env_t *env ARG_UNUSED)
   inf = fopen (filename, "r");
   if (!inf)
     {
-      util_error (_("can't open %s: %s\n"), filename, strerror (errno));
+      util_error (_("Cannot open %s: %s\n"), filename, strerror (errno));
       free (filename);
       return 1;
     }
@@ -602,7 +602,7 @@ var_write (int argc, char **argv, compose_env_t *env)
 
   if (!fp)
     {
-      util_error (_("can't open %s: %s\n"), filename, strerror (errno));
+      util_error (_("Cannot open %s: %s\n"), filename, strerror (errno));
       free (filename);
       return 1;
     }
@@ -632,6 +632,7 @@ var_pipe (int argc, char **argv, compose_env_t *env)
 
   if (argc == 1)
     {
+      /* TRANSLATORS: 'pipe' is a command name. Do not translate it! */
       util_error (_("pipe: no command specified"));
       return 1;
     }
@@ -676,7 +677,7 @@ var_pipe (int argc, char **argv, compose_env_t *env)
 	xargv[i] = argv[i + 1];
       xargv[i] = NULL;
       execvp (xargv[0], xargv);
-      util_error (_("cannot exec process `%s': %s"), xargv[0], strerror (errno));
+      util_error (_("Cannot exec process `%s': %s"), xargv[0], strerror (errno));
       exit (1);
     }
   else
@@ -709,14 +710,14 @@ var_pipe (int argc, char **argv, compose_env_t *env)
       waitpid (pid, &status, 0);
       if (!WIFEXITED (status))
 	{
-	  util_error (_("child terminated abnormally: %d"), WEXITSTATUS (status));
+	  util_error (_("Child terminated abnormally: %d"), WEXITSTATUS (status));
 	}
       else
 	{
 	  struct stat st;
 	  if (fstat (fd, &st))
 	    {
-	      util_error (_("can't stat output file: %s"), strerror (errno));
+	      util_error (_("Cannot stat output file: %s"), strerror (errno));
 	    }
 	  else if (st.st_size > 0)
 	    rc = 0;
diff --git a/mail/z.c b/mail/z.c
index da9668acc..d0242cce5 100644
--- a/mail/z.c
+++ b/mail/z.c
@@ -84,7 +84,7 @@ z_parse_args(int argc, char **argv,
 	{
 	  if (dir == D_NONE)
 	    {
-	      util_error (_("argument not applicable for z."));
+	      util_error (_("Argument not applicable for z"));
 	      return 1;
 	    }