Make the tone of the error messages a bit less formal, by using

contractions.  (Safari does, at least when you're trying to open a file
to which you don't have read access.)

svn path=/trunk/; revision=12852

21 files changed, 61 insertions, 61 deletions

diff --git a/alert_box.c b/alert_box.c
index 6c3dba26c3..7f3c14826f 100644
--- a/alert_box.c
+++ b/alert_box.c
@@ -113,7 +113,7 @@ bad_dfilter_alert_box(const char *dftext)
   simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, 
                 "%s%s%s\n"
                 "\n"
-                "The filter expression \"%s\" is not a valid display filter.\n"
+                "The filter expression \"%s\" isn't a valid display filter.\n"
                 "See the help for a description of the display filter syntax.",
                 simple_dialog_primary_start(), dfilter_error_msg,
                 simple_dialog_primary_end(), dftext);
diff --git a/capture_loop.c b/capture_loop.c
index 4670f4be3c..3f9989c408 100644
--- a/capture_loop.c
+++ b/capture_loop.c
@@ -735,7 +735,7 @@ static int capture_loop_init_filter(loop_data *ld, char *errmsg, int errmsg_len)
         g_snprintf(errmsg, errmsg_len,
           "%sInvalid capture filter: \"%s\"!%s\n"
           "\n"
-          "That string looks like a valid display filter; however, it is not a valid\n"
+          "That string looks like a valid display filter; however, it isn't a valid\n"
           "capture filter (%s).\n"
           "\n"
           "Note that display filters and capture filters don't have the same syntax,\n"
@@ -749,7 +749,7 @@ static int capture_loop_init_filter(loop_data *ld, char *errmsg, int errmsg_len)
         g_snprintf(errmsg, errmsg_len,
           "%sInvalid capture filter: \"%s\"!%s\n"
           "\n"
-          "That string is not a valid capture filter (%s).\n"
+          "That string isn't a valid capture filter (%s).\n"
           "See the help for a description of the capture filter syntax.",
           simple_dialog_primary_start(), cfile.cfilter, simple_dialog_primary_end(),
           pcap_geterr(ld->pcap_h));
diff --git a/editcap.c b/editcap.c
index d6be0135fa..0708489c53 100644
--- a/editcap.c
+++ b/editcap.c
@@ -230,12 +230,12 @@ set_time_adjustment(char *optarg)
   } else {
       val = strtol(optarg, &frac, 10);
       if (frac == NULL || frac == optarg || val == LONG_MIN || val == LONG_MAX) {
-          fprintf(stderr, "editcap: \"%s\" is not a valid ime adjustment\n",
+          fprintf(stderr, "editcap: \"%s\" isn't a valid time adjustment\n",
                   optarg);
           exit(1);
       }
       if (val < 0) {            /* implies '--' since we caught '-' above  */
-          fprintf(stderr, "editcap: \"%s\" is not a valid time adjustment\n",
+          fprintf(stderr, "editcap: \"%s\" isn't a valid time adjustment\n",
                   optarg);
           exit(1);
       }
@@ -247,7 +247,7 @@ set_time_adjustment(char *optarg)
     val = strtol(&(frac[1]), &end, 10);
     if (*frac != '.' || end == NULL || end == frac
         || val < 0 || val > ONE_MILLION || val == LONG_MIN || val == LONG_MAX) {
-      fprintf(stderr, "editcap: \"%s\" is not a valid time adjustment\n",
+      fprintf(stderr, "editcap: \"%s\" isn't a valid time adjustment\n",
               optarg);
       exit(1);
     }
@@ -324,7 +324,7 @@ int main(int argc, char *argv[])
     case 'T':
       out_frame_type = wtap_short_string_to_encap(optarg);
       if (out_frame_type < 0) {
-      	fprintf(stderr, "editcap: \"%s\" is not a valid encapsulation type\n",
+      	fprintf(stderr, "editcap: \"%s\" isn't a valid encapsulation type\n",
       	    optarg);
       	exit(1);
       }
@@ -333,7 +333,7 @@ int main(int argc, char *argv[])
     case 'F':
       out_file_type = wtap_short_string_to_file_type(optarg);
       if (out_file_type < 0) {
-      	fprintf(stderr, "editcap: \"%s\" is not a valid capture file type\n",
+      	fprintf(stderr, "editcap: \"%s\" isn't a valid capture file type\n",
       	    optarg);
       	exit(1);
       }
@@ -350,7 +350,7 @@ int main(int argc, char *argv[])
     case 's':
       snaplen = strtol(optarg, &p, 10);
       if (p == optarg || *p != '\0') {
-      	fprintf(stderr, "editcap: \"%s\" is not a valid snapshot length\n",
+      	fprintf(stderr, "editcap: \"%s\" isn't a valid snapshot length\n",
       	    optarg);
       	exit(1);
       }
diff --git a/epan/filesystem.c b/epan/filesystem.c
index 5032b520af..bf559bbab2 100644
--- a/epan/filesystem.c
+++ b/epan/filesystem.c
@@ -657,16 +657,16 @@ file_open_error_message(int err, gboolean for_writing)
 
 	case ENOENT:
 		if (for_writing)
-			errmsg = "The path to the file \"%s\" does not exist.";
+			errmsg = "The path to the file \"%s\" doesn't exist.";
 		else
-			errmsg = "The file \"%s\" does not exist.";
+			errmsg = "The file \"%s\" doesn't exist.";
 		break;
 
 	case EACCES:
 		if (for_writing)
-			errmsg = "You do not have permission to create or write to the file \"%s\".";
+			errmsg = "You don't have permission to create or write to the file \"%s\".";
 		else
-			errmsg = "You do not have permission to read the file \"%s\".";
+			errmsg = "You don't have permission to read the file \"%s\".";
 		break;
 
 	case EISDIR:
diff --git a/file.c b/file.c
index e624f6d096..44a040aaa6 100644
--- a/file.c
+++ b/file.c
@@ -1182,7 +1182,7 @@ filter_packets(capture_file *cf, gchar *dftext, gboolean force)
       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, 
           "%s%s%s\n"
           "\n"
-          "The following display filter is not a valid display filter:\n%s\n"
+          "The following display filter isn't a valid display filter:\n%s\n"
           "See the help for a description of the display filter syntax.",
           simple_dialog_primary_start(), safe_dfilter_error_msg,
           simple_dialog_primary_end(), safe_dftext);
@@ -2784,7 +2784,7 @@ goto_frame(capture_file *cf, guint fnumber)
     /* that packet currently isn't displayed */
     /* XXX - add it to the set of displayed packets? */
     simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		  "That packet is not currently being displayed.");
+		  "That packet isn't currently being displayed.");
     return FALSE;	/* we failed to go to that packet */
   }
 
@@ -3249,21 +3249,21 @@ cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
     case WTAP_ERR_RANDOM_OPEN_PIPE:
       /* Seen only when opening a capture file for reading. */
       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		    "The file \"%s\" is a pipe or FIFO; Ethereal cannot read pipe or FIFO files.",
+		    "The file \"%s\" is a pipe or FIFO; Ethereal can't read pipe or FIFO files.",
 		    filename);
       break;
 
     case WTAP_ERR_FILE_UNKNOWN_FORMAT:
       /* Seen only when opening a capture file for reading. */
       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		    "The file \"%s\" is not a capture file in a format Ethereal understands.",
+		    "The file \"%s\" isn't a capture file in a format Ethereal understands.",
 		    filename);
       break;
 
     case WTAP_ERR_UNSUPPORTED:
       /* Seen only when opening a capture file for reading. */
       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		    "The file \"%s\" is not a capture file in a format Ethereal understands.\n"
+		    "The file \"%s\" isn't a capture file in a format Ethereal understands.\n"
 		    "(%s)",
 		    filename, err_info);
       g_free(err_info);
@@ -3272,7 +3272,7 @@ cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
     case WTAP_ERR_CANT_WRITE_TO_PIPE:
       /* Seen only when opening a capture file for writing. */
       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		    "The file \"%s\" is a pipe, and %s capture files cannot be "
+		    "The file \"%s\" is a pipe, and %s capture files can't be "
 		    "written to a pipe.",
 		    filename, wtap_file_type_string(file_type));
       break;
@@ -3280,13 +3280,13 @@ cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
     case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
       /* Seen only when opening a capture file for writing. */
       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		    "Ethereal does not support writing capture files in that format.");
+		    "Ethereal doesn't support writing capture files in that format.");
       break;
 
     case WTAP_ERR_UNSUPPORTED_ENCAP:
       if (for_writing) {
 	simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		      "Ethereal cannot save this capture in that format.");
+		      "Ethereal can't save this capture in that format.");
       } else {
 	simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 		      "The file \"%s\" is a capture for a network type that Ethereal doesn't support.\n"
@@ -3299,7 +3299,7 @@ cf_open_failure_alert_box(const char *filename, int err, gchar *err_info,
     case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
       if (for_writing) {
 	simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		      "Ethereal cannot save this capture in that format.");
+		      "Ethereal can't save this capture in that format.");
       } else {
 	simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 		      "The file \"%s\" is a capture for a network type that Ethereal doesn't support.",
@@ -3364,11 +3364,11 @@ file_rename_error_message(int err)
   switch (err) {
 
   case ENOENT:
-    errmsg = "The path to the file \"%s\" does not exist.";
+    errmsg = "The path to the file \"%s\" doesn't exist.";
     break;
 
   case EACCES:
-    errmsg = "You do not have permission to move the capture file to \"%s\".";
+    errmsg = "You don't have permission to move the capture file to \"%s\".";
     break;
 
   default:
diff --git a/gtk/color_dlg.c b/gtk/color_dlg.c
index 5ae6f19567..9f8c5493ec 100644
--- a/gtk/color_dlg.c
+++ b/gtk/color_dlg.c
@@ -1417,7 +1417,7 @@ edit_color_filter_ok_cb                (GtkButton       *button,
 
     if(!dfilter_compile(filter_text, &compiled_filter)) {
         simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                      "Filter \"%s\" did not compile correctly.\n"
+                      "Filter \"%s\" didn't compile correctly.\n"
                       " Please try again. Filter unchanged.\n%s\n", filter_name,
                       dfilter_error_msg);
     } else {
diff --git a/gtk/dfilter_expr_dlg.c b/gtk/dfilter_expr_dlg.c
index 32dd1ec28d..154bd8fe97 100644
--- a/gtk/dfilter_expr_dlg.c
+++ b/gtk/dfilter_expr_dlg.c
@@ -862,11 +862,11 @@ dfilter_expr_dlg_accept_cb(GtkWidget *w, gpointer filter_te_arg)
     if (!can_compare) {
         if (range_str == NULL) {
             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                          "That field cannot be tested with \"%s\".",
+                          "That field can't be tested with \"%s\".",
                           item_str);
         } else {
             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                          "Ranges of that field cannot be tested with \"%s\".",
+                          "Ranges of that field can't be tested with \"%s\".",
                           item_str);
         }
         if (range_str != NULL)
diff --git a/gtk/file_dlg.c b/gtk/file_dlg.c
index 2d2fe30816..e4ecd5990f 100644
--- a/gtk/file_dlg.c
+++ b/gtk/file_dlg.c
@@ -981,7 +981,7 @@ file_merge_cmd_cb(GtkWidget *widget, gpointer data _U_) {
     /* user didn't saved his current file, ask him */
     dialog = simple_dialog(ESD_TYPE_CONFIRMATION, ESD_BTNS_OK_CANCEL,
                 PRIMARY_TEXT_START "Save the capture file before merging to another one?" PRIMARY_TEXT_END "\n\n"
-                "A temporary capture file cannot be merged.");
+                "A temporary capture file can't be merged.");
     simple_dialog_set_cb(dialog, file_merge_answered_cb, widget);
   } else {
     /* unchanged file, just start to merge */
diff --git a/gtk/font_utils.c b/gtk/font_utils.c
index 37f2cbdf37..52d317c465 100644
--- a/gtk/font_utils.c
+++ b/gtk/font_utils.c
@@ -300,7 +300,7 @@ user_font_test(gchar *font_name)
 		   Tell the user, but don't tear down the font selection
 		   dialog, so that they can try again. */
 		simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		   "The font you selected cannot be loaded.");
+		   "The font you selected can't be loaded.");
 
 #if GTK_MAJOR_VERSION < 2
 		g_free(bold_font_name);
diff --git a/gtk/io_stat.c b/gtk/io_stat.c
index 2518492a28..4659a125c3 100644
--- a/gtk/io_stat.c
+++ b/gtk/io_stat.c
@@ -1523,7 +1523,7 @@ filter_callback(GtkWidget *widget _U_, io_stat_graph_t *gio)
 	if(gio->io->count_type==COUNT_TYPE_ADVANCED){
 		/* warn and bail out if there was no field specified */
 		if(field==NULL || field[0]==0){
-			simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "You did not specify a field name.");
+			simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "You didn't specify a field name.");
 			disable_graph(gio);
 			io_stat_redraw(gio->io);
 			return 0;
@@ -1531,7 +1531,7 @@ filter_callback(GtkWidget *widget _U_, io_stat_graph_t *gio)
 		/* warn and bail out if the field could not be found */
 		hfi=proto_registrar_get_byname(field);
 		if(hfi==NULL){
-			simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "'%s' is not a valid field name.", field);
+			simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "'%s' isn't a valid field name.", field);
 			disable_graph(gio);
 			io_stat_redraw(gio->io);
 			return 0;
diff --git a/gtk/main.c b/gtk/main.c
index 03d42931f2..9637869dfa 100644
--- a/gtk/main.c
+++ b/gtk/main.c
@@ -1014,7 +1014,7 @@ get_natural_int(const char *string, const char *name)
 
   number = strtol(string, &p, 10);
   if (p == string || *p != '\0') {
-    fprintf(stderr, "ethereal: The specified %s \"%s\" is not a decimal number\n",
+    fprintf(stderr, "ethereal: The specified %s \"%s\" isn't a decimal number\n",
 	    name, string);
     exit(1);
   }
@@ -2088,7 +2088,7 @@ main(int argc, char *argv[])
 #ifdef HAVE_PCAP_DATALINK_NAME_TO_VAL
         capture_opts.linktype = pcap_datalink_name_to_val(optarg);
         if (capture_opts.linktype == -1) {
-          fprintf(stderr, "ethereal: The specified data link type \"%s\" is not valid\n",
+          fprintf(stderr, "ethereal: The specified data link type \"%s\" isn't valid\n",
                   optarg);
           exit(1);
         }
@@ -2192,7 +2192,7 @@ main(int argc, char *argv[])
 #ifdef HAVE_LIBPCAP
   if (start_capture && list_link_layer_types) {
     /* Specifying *both* is bogus. */
-    fprintf(stderr, "ethereal: You cannot specify both -L and a live capture.\n");
+    fprintf(stderr, "ethereal: You can't specify both -L and a live capture.\n");
     exit(1);
   }
 
@@ -2201,12 +2201,12 @@ main(int argc, char *argv[])
        did the user also specify a capture file to be read? */
     if (cf_name) {
       /* Yes - that's bogus. */
-      fprintf(stderr, "ethereal: You cannot specify -L and a capture file to be read.\n");
+      fprintf(stderr, "ethereal: You can't specify -L and a capture file to be read.\n");
       exit(1);
     }
     /* No - did they specify a ring buffer option? */
     if (capture_opts.multi_files_on) {
-      fprintf(stderr, "ethereal: Ring buffer requested, but a capture is not being done.\n");
+      fprintf(stderr, "ethereal: Ring buffer requested, but a capture isn't being done.\n");
       exit(1);
     }
   } else {
@@ -2214,7 +2214,7 @@ main(int argc, char *argv[])
        a capture file to be read? */
     if (start_capture && cf_name) {
       /* Yes - that's bogus. */
-      fprintf(stderr, "ethereal: You cannot specify both a live capture and a capture file to be read.\n");
+      fprintf(stderr, "ethereal: You can't specify both a live capture and a capture file to be read.\n");
       exit(1);
     }
 
diff --git a/gtk/prefs_dlg.c b/gtk/prefs_dlg.c
index 517c3ecc13..39b82b801b 100644
--- a/gtk/prefs_dlg.c
+++ b/gtk/prefs_dlg.c
@@ -1099,13 +1099,13 @@ prefs_main_fetch_all(GtkWidget *dlg, gboolean *must_redissect)
 
     case PREF_UINT:
       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                    "The value for \"%s\" is not a valid number.",
+                    "The value for \"%s\" isn't a valid number.",
                     badpref->title);
       return FALSE;
 
     case PREF_RANGE:
       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                    "The value for \"%s\" is not a valid range.",
+                    "The value for \"%s\" isn't a valid range.",
                     badpref->title);
       return FALSE;
 
diff --git a/gtk/rtp_analysis.c b/gtk/rtp_analysis.c
index bce23cd2c4..10938f6a42 100644
--- a/gtk/rtp_analysis.c
+++ b/gtk/rtp_analysis.c
@@ -3656,7 +3656,7 @@ void rtp_analysis_cb(GtkWidget *w _U_, gpointer data _U_)
         /* check if it is RTP Version 2 */
         if (!get_int_value_from_proto_tree(edt->tree, "rtp", "rtp.version", &version_fwd) || version_fwd != 2) {
                 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                    "RTP Version != 2 is not supported!");
+                    "RTP Version != 2 isn't supported!");
                 return;
         }
 	
diff --git a/gtk/tcp_graph.c b/gtk/tcp_graph.c
index f0289b520a..37d2b7c0b8 100644
--- a/gtk/tcp_graph.c
+++ b/gtk/tcp_graph.c
@@ -554,7 +554,7 @@ void tcp_graph_cb (GtkWidget *w _U_, gpointer data, guint callback_action /*grap
 		 * nor TCP over IP alone - should display some
 		 * kind of warning dialog */
 		simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-		    "Selected packet is not a TCP segment");
+		    "Selected packet isn't a TCP segment");
 		return;
 	}
 
diff --git a/gtk/webbrowser.c b/gtk/webbrowser.c
index f3d914647c..7c51d4c1ae 100644
--- a/gtk/webbrowser.c
+++ b/gtk/webbrowser.c
@@ -194,7 +194,7 @@ browser_open_url (const gchar *url)
      XXX - has to be improved */
   simple_dialog(ESD_TYPE_INFO, ESD_BTN_OK, 
       PRIMARY_TEXT_START "Web browser access not implemented." PRIMARY_TEXT_END
-      "\n\nThis Ethereal version (using the GLib 1.x toolkit) cannot access web browsers. "
+      "\n\nThis Ethereal version (using the GLib 1.x toolkit) can't access web browsers. "
       "\n\nYou may try to open the following URL in your web browser: \n\n"
       "%s",
       url);
diff --git a/mergecap.c b/mergecap.c
index 54bffc5539..83777a7ebe 100644
--- a/mergecap.c
+++ b/mergecap.c
@@ -55,7 +55,7 @@ get_natural_int(const char *string, const char *name)
 
   number = strtol(string, &p, 10);
   if (p == string || *p != '\0') {
-    fprintf(stderr, "mergecap: The specified %s \"%s\" is not a decimal number\n",
+    fprintf(stderr, "mergecap: The specified %s \"%s\" isn't a decimal number\n",
 	    name, string);
     exit(1);
   }
@@ -162,7 +162,7 @@ main(int argc, char *argv[])
     case 'T':
       frame_type = wtap_short_string_to_encap(optarg);
       if (frame_type < 0) {
-      	fprintf(stderr, "mergecap: \"%s\" is not a valid encapsulation type\n",
+      	fprintf(stderr, "mergecap: \"%s\" isn't a valid encapsulation type\n",
       	    optarg);
       	exit(1);
       }
@@ -171,7 +171,7 @@ main(int argc, char *argv[])
     case 'F':
       file_type = wtap_short_string_to_file_type(optarg);
       if (file_type < 0) {
-      	fprintf(stderr, "mergecap: \"%s\" is not a valid capture file type\n",
+      	fprintf(stderr, "mergecap: \"%s\" isn't a valid capture file type\n",
       	    optarg);
       	exit(1);
       }
diff --git a/pcap-util.c b/pcap-util.c
index f2cb31cac6..38565f4e87 100644
--- a/pcap-util.c
+++ b/pcap-util.c
@@ -426,7 +426,7 @@ set_pcap_linktype(pcap_t *pch, char *devname
 	/* Let them set it to the type it is; reject any other request. */
 	if (get_pcap_linktype(pch, devname) == dlt)
 		return NULL;	/* no error */
-	return "That DLT is not one of the DLTs supported by this device";
+	return "That DLT isn't one of the DLTs supported by this device";
 #endif
 }
 
diff --git a/tap-protocolinfo.c b/tap-protocolinfo.c
index 10abe10037..fcb4dbb2e4 100644
--- a/tap-protocolinfo.c
+++ b/tap-protocolinfo.c
@@ -109,7 +109,7 @@ protocolinfo_init(char *optarg)
 
 	hfi=proto_registrar_get_byname(field);
 	if(!hfi){
-		fprintf(stderr, "tethereal: Field \"%s\" does not exist.\n", field);
+		fprintf(stderr, "tethereal: Field \"%s\" doesn't exist.\n", field);
 		exit(1);
 	}
 
diff --git a/tap-rpcstat.c b/tap-rpcstat.c
index 61471d7dc8..6941838c72 100644
--- a/tap-rpcstat.c
+++ b/tap-rpcstat.c
@@ -318,7 +318,7 @@ rpcstat_init(char *optarg)
 	g_hash_table_foreach(rpc_procs, (GHFunc)rpcstat_find_procs, NULL);
 	if(rpc_min_proc==-1){
 		fprintf(stderr,"tethereal: Invalid -z rpc,rrt,%d,%d\n",rpc_program,rpc_version);
-		fprintf(stderr,"   Program:%d version:%d is not supported by tethereal.\n", rpc_program, rpc_version);
+		fprintf(stderr,"   Program:%d version:%d isn't supported by tethereal.\n", rpc_program, rpc_version);
 		exit(1);
 	}
 
diff --git a/tethereal.c b/tethereal.c
index c27c32722e..d3c45b71ea 100644
--- a/tethereal.c
+++ b/tethereal.c
@@ -308,7 +308,7 @@ get_natural_int(const char *string, const char *name)
 
   number = strtol(string, &p, 10);
   if (p == string || *p != '\0') {
-    fprintf(stderr, "tethereal: The specified %s \"%s\" is not a decimal number\n",
+    fprintf(stderr, "tethereal: The specified %s \"%s\" isn't a decimal number\n",
 	    name, string);
     exit(1);
   }
@@ -1043,7 +1043,7 @@ main(int argc, char *argv[])
       case 'F':
         out_file_type = wtap_short_string_to_file_type(optarg);
         if (out_file_type < 0) {
-          fprintf(stderr, "tethereal: \"%s\" is not a valid capture file type\n",
+          fprintf(stderr, "tethereal: \"%s\" isn't a valid capture file type\n",
 			optarg);
           exit(1);
         }
@@ -1250,7 +1250,7 @@ main(int argc, char *argv[])
 #ifdef HAVE_PCAP_DATALINK_NAME_TO_VAL
         capture_opts.linktype = pcap_datalink_name_to_val(optarg);
         if (capture_opts.linktype == -1) {
-          fprintf(stderr, "tethereal: The specified data link type \"%s\" is not valid\n",
+          fprintf(stderr, "tethereal: The specified data link type \"%s\" isn't valid\n",
                   optarg);
           exit(1);
         }
@@ -1394,12 +1394,12 @@ main(int argc, char *argv[])
        did the user also specify a capture file to be read? */
     if (cf_name) {
       /* Yes - that's bogus. */
-      fprintf(stderr, "tethereal: You cannot specify -L and a capture file to be read.\n");
+      fprintf(stderr, "tethereal: You can't specify -L and a capture file to be read.\n");
       exit(1);
     }
     /* No - did they specify a ring buffer option? */
     if (capture_opts.ringbuffer_on) {
-      fprintf(stderr, "tethereal: Ring buffer requested, but a capture is not being done.\n");
+      fprintf(stderr, "tethereal: Ring buffer requested, but a capture isn't being done.\n");
       exit(1);
     }
   } else {
@@ -2337,7 +2337,7 @@ load_cap_file(capture_file *cf, int out_file_type)
       case WTAP_ERR_UNSUPPORTED_ENCAP:
       case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
         fprintf(stderr,
-          "tethereal: The capture file being read cannot be written in "
+          "tethereal: The capture file being read can't be written in "
           "that format.\n");
         break;
 
@@ -3093,13 +3093,13 @@ cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
 
     case WTAP_ERR_FILE_UNKNOWN_FORMAT:
       /* Seen only when opening a capture file for reading. */
-      errmsg = "The file \"%s\" is not a capture file in a format Tethereal understands.";
+      errmsg = "The file \"%s\" isn't a capture file in a format Tethereal understands.";
       break;
 
     case WTAP_ERR_UNSUPPORTED:
       /* Seen only when opening a capture file for reading. */
       snprintf(errmsg_errno, sizeof(errmsg_errno),
-               "The file \"%%s\" is not a capture file in a format Tethereal understands.\n"
+               "The file \"%%s\" isn't a capture file in a format Tethereal understands.\n"
                "(%s)", err_info);
       g_free(err_info);
       errmsg = errmsg_errno;
@@ -3108,19 +3108,19 @@ cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
     case WTAP_ERR_CANT_WRITE_TO_PIPE:
       /* Seen only when opening a capture file for writing. */
       snprintf(errmsg_errno, sizeof(errmsg_errno),
-	       "The file \"%%s\" is a pipe, and %s capture files cannot be "
+	       "The file \"%%s\" is a pipe, and %s capture files can't be "
 	       "written to a pipe.", wtap_file_type_string(file_type));
       errmsg = errmsg_errno;
       break;
 
     case WTAP_ERR_UNSUPPORTED_FILE_TYPE:
       /* Seen only when opening a capture file for writing. */
-      errmsg = "Tethereal does not support writing capture files in that format.";
+      errmsg = "Tethereal doesn't support writing capture files in that format.";
       break;
 
     case WTAP_ERR_UNSUPPORTED_ENCAP:
       if (for_writing)
-        errmsg = "Tethereal cannot save this capture in that format.";
+        errmsg = "Tethereal can't save this capture in that format.";
       else {
         snprintf(errmsg_errno, sizeof(errmsg_errno),
                  "The file \"%%s\" is a capture for a network type that Tethereal doesn't support.\n"
@@ -3132,7 +3132,7 @@ cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
 
     case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
       if (for_writing)
-        errmsg = "Tethereal cannot save this capture in that format.";
+        errmsg = "Tethereal can't save this capture in that format.";
       else
         errmsg = "The file \"%s\" is a capture for a network type that Tethereal doesn't support.";
       break;
diff --git a/version_info.c b/version_info.c
index 77ea62a544..0e6af95fe5 100644
--- a/version_info.c
+++ b/version_info.c
@@ -188,7 +188,7 @@ get_compiled_version_info(GString *str)
 #ifndef HAVE_LIBPCRE
 	break_point = str->len - 1;
 	g_string_append(str,
-			"\nNOTE: this build does not support the \"matches\" operator for Ethereal filter"
+			"\nNOTE: this build doesn't support the \"matches\" operator for Ethereal filter"
 			"\nsyntax.");
 	do_word_wrap(str, break_point);
 #endif	/* HAVE_LIBPCRE */