fixup Fix some warnings

libdino/src/service/database.vala

@@ -259,8 +259,7 @@ public class Database : Qlite.Database {
                     message.type=conversation.type+1 and
                     (message.counterpart_resource=conversation.resource or message.type != 3)""");
             } catch (Error e) {
-                stderr.printf("Failed to upgrade to database version 8: %s\n", e.message);
-                Process.exit(-1);
+                error("Failed to upgrade to database version 8: %s", e.message);
             }
         }
         if (oldVersion < 9) {
@@ -277,8 +276,7 @@ public class Database : Qlite.Database {
                     message.body in (select info from file_transfer where info not null) or
                     message.id in (select info from file_transfer where info not null)""");
             } catch (Error e) {
-                stderr.printf("Failed to upgrade to database version 8: %s\n", e.message);
-                Process.exit(-1);
+                error("Failed to upgrade to database version 9: %s", e.message);
             }
         }
     }

main/src/ui/conversation_selector/conversation_selector_row.vala

@@ -136,11 +136,7 @@ public class ConversationSelectorRow : ListBoxRow {
                         nick_label.label = last_message.direction == Message.DIRECTION_SENT ? _("Me") + ": " : "";
                     }
 
-                    try {
-                        message_label.label = Markup.escape_text((/\s+/).replace_literal(last_message.body, -1, 0, " "));
-                    } catch (RegexError e) {
-                        assert_not_reached();
-                    }
+                    message_label.label = Util.summarize_whitespaces_to_space(last_message.body);
                     break;
                 case FileItem.TYPE:
                     FileItem file_item = last_content_item as FileItem;

main/src/ui/global_search.vala

@@ -205,8 +205,8 @@ public class GlobalSearch : Overlay {
         regex_str += ")";
 
         // Color the keywords
-        int elongated_by = 0;
         try {
+            int elongated_by = 0;
             Regex highlight_regex = new Regex(regex_str);
             MatchInfo match_info;
             string markup_text_bak = markup_text.down();
@@ -218,19 +218,19 @@ public class GlobalSearch : Overlay {
                 elongated_by += "<span bgcolor=\"yellow\">".length + "</span>".length;
             }
             markup_text_bak += ""; // We need markup_text_bak to live until here because url_regex.match does not copy the string
-
-            label.label = markup_text;
-            grid.attach(label, 1, 1, 1, 1);
-
-            Button button = new Button() { relief=ReliefStyle.NONE, visible=true };
-            button.clicked.connect(() => {
-                selected_item(item);
-            });
-            button.add(grid);
-            return button;
         } catch (RegexError e) {
             assert_not_reached();
         }
+
+        label.label = markup_text;
+        grid.attach(label, 1, 1, 1, 1);
+
+        Button button = new Button() { relief=ReliefStyle.NONE, visible=true };
+        button.clicked.connect(() => {
+            selected_item(item);
+        });
+        button.add(grid);
+        return button;
     }
 
     private Grid get_context_message_widget(MessageItem item) {

main/src/ui/unified_window_controller.vala

@@ -153,19 +153,11 @@ public class UnifiedWindowController : Object {
 
     private void update_conversation_topic(string? subtitle = null) {
         if (subtitle != null) {
-            try {
-                conversation_topic = (/\s+/).replace_literal(subtitle, -1, 0, " ");
-            } catch (RegexError e) {
-                assert_not_reached();
-            }
+            conversation_topic = Util.summarize_whitespaces_to_space(subtitle);
         } else if (conversation.type_ == Conversation.Type.GROUPCHAT) {
             string? subject = stream_interactor.get_module(MucManager.IDENTITY).get_groupchat_subject(conversation.counterpart, conversation.account);
             if (subject != null) {
-                try {
-                    conversation_topic =  (/\s+/).replace_literal(subject, -1, 0, " ");
-                } catch (RegexError e) {
-                    assert_not_reached();
-                }
+                conversation_topic = Util.summarize_whitespaces_to_space(subject);
             } else {
                 conversation_topic = null;
             }

main/src/ui/util/helper.vala

@@ -272,6 +272,14 @@ public int get_only_emoji_count(string markup_text) {
     return emoji_no;
 }
 
+public string summarize_whitespaces_to_space(string s) {
+    try {
+        return (/\s+/).replace_literal(s, -1, 0, " ");
+    } catch (RegexError e) {
+        assert_not_reached();
+    }
+}
+
 public bool use_csd() {
     return (GLib.Application.get_default() as Application).use_csd();
 }

plugins/signal-protocol/vapi/signal-protocol-public.vapi

@@ -220,9 +220,8 @@ namespace Signal {
         [CCode (cname = "ec_public_key_serialize_")]
         public uint8[] serialize() {
             Buffer buffer;
-            try {
-                throw_by_code(serialize_(out buffer));
-            } catch (GLib.Error e) {
+            int code = serialize_(out buffer);
+            if (code < 0 && code > MIN_ERROR_CODE) {
                 // Can only throw for invalid arguments or out of memory.
                 GLib.assert_not_reached();
             }
@@ -240,9 +239,8 @@ namespace Signal {
         [CCode (cname = "ec_private_key_serialize_")]
         public uint8[] serialize() throws GLib.Error {
             Buffer buffer;
-            try {
-                throw_by_code(serialize_(out buffer));
-            } catch (GLib.Error e) {
+            int code = serialize_(out buffer);
+            if (code < 0 && code > MIN_ERROR_CODE) {
                 // Can only throw for invalid arguments or out of memory.
                 GLib.assert_not_reached();
             }

xmpp-vala/src/util.vala

@@ -1,27 +1,17 @@
 namespace Xmpp.Util {
 
-// Parse a number from a hexadecimal representation.
-//
-// Skips any whitespace at the start of the string, parses as many valid
-// characters as hexadecimal digits as possible (possibly zero) and returns
-// them as an integer value.
-//
-// ```
-// // 0x0
-// print("0x%lx\n", from_hex(""));
-//
-// // 0x123abc
-// print("0x%lx\n", from_hex("123abc"));
-//
-// // 0x0
-// print("0x%lx\n", from_hex("0x123abc"));
-//
-// // 0xa
-// print("0x%lx\n", from_hex("A quick brown fox jumps over the lazy dog."));
-//
-// // 0xfeed
-// print("0x%lx\n", from_hex("   FEED ME   "));
-// ```
+ /**
+  * Parse a number from a hexadecimal representation.
+  *
+  * Skips any whitespace at the start of the string, parses as many valid
+  * characters as hexadecimal digits as possible (possibly zero) and returns
+  * them as an integer value.
+  *
+  * ```
+  * // 0xa
+  * print("0x%lx\n", from_hex("A quick brown fox jumps over the lazy dog."));
+  * ```
+  */
 
 public long from_hex(string numeral) {
     long result = 0;