irc: use current channel first in completion "irc_channels" (task #12923, issue #392)

ChangeLog.asciidoc

@@ -26,6 +26,8 @@ https://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 * api: add function string_hex_dump()
 * api: add argument "length" in function utf8_is_valid()
 * alias: display completion in /alias list (issue #518)
+* irc: use current channel first in completion "irc_channels"
+  (task #12923, issue #392)
 * irc: add support of "cap-notify" capability (issue #182, issue #477)
 * irc: add command /cap (issue #8)
 * irc: add hex dump of messages in raw buffer when debug is enabled for irc

src/plugins/irc/irc-completion.c

@@ -480,6 +480,14 @@ irc_completion_channels_cb (void *data, const char *completion_item,
         }
     }
 
+    /* add current channel first in list */
+    irc_buffer_get_server_and_channel (buffer, NULL, &ptr_channel);
+    if (ptr_channel)
+    {
+        weechat_hook_completion_list_add (completion, ptr_channel->name,
+                                          0, WEECHAT_LIST_POS_BEGINNING);
+    }
+
     return WEECHAT_RC_OK;
 }