--- a
+++ b/functions/adminfunc/plugin_search.m
@@ -0,0 +1,71 @@
+% PLUGIN_SEARCH - support function for plugin_menu
+
+% Copyright (C) 2019 Arnaud Delorme
+%
+% This file is part of EEGLAB, see http://www.eeglab.org
+% for the documentation and details.
+%
+% Redistribution and use in source and binary forms, with or without
+% modification, are permitted provided that the following conditions are met:
+%
+% 1. Redistributions of source code must retain the above copyright notice,
+% this list of conditions and the following disclaimer.
+%
+% 2. Redistributions in binary form must reproduce the above copyright notice,
+% this list of conditions and the following disclaimer in the documentation
+% and/or other materials provided with the distribution.
+%
+% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+% THE POSSIBILITY OF SUCH DAMAGE.
+
+function plugin_search(fig)
+
+tmpobj = get(fig, 'userdata');
+allPlugins = tmpobj.allplugins;
+
+uistyle      = get(findobj(fig, 'tag', 'search'), 'style');
+if strcmpi(uistyle, 'pushbutton')
+    set(findobj(fig, 'tag', 'search'), 'style', 'edit', 'string', '');
+    return;
+end
+
+searchString = lower(get(findobj(fig, 'tag', 'search'), 'string'));
+if isempty(searchString), return; end
+searchString = textscan(searchString, '%s');
+searchString = searchString{1};
+
+% reset filters
+set(findobj(fig, 'tag', 'filter1'), 'value', 1);
+set(findobj(fig, 'tag', 'filter2'), 'value', 1);
+
+% search
+if isempty(searchString)
+    selectedPlugins = allPlugins;
+else
+    selectedPluginsIndex = [];
+    for iSearch = 1:length(searchString)
+        res = strfind( { allPlugins.strsearch }, searchString{iSearch});
+        if isempty(selectedPluginsIndex)
+            selectedPluginsIndex = find(~cellfun(@isempty, res));
+        else
+            selectedPluginsIndex = intersect(selectedPluginsIndex, find(~cellfun(@isempty, res)));
+        end
+    end
+    selectedPlugins = allPlugins(selectedPluginsIndex);
+end
+
+% update GUI
+set(findobj(fig, 'tag', 'pluginlist'), 'string', { selectedPlugins.text }, 'value', []);
+tmpobj.selection = [];
+tmpobj.selectedplugins = selectedPlugins;
+
+set(fig, 'userdata', tmpobj);