Plugins | Editor for "Favorite Searches" (History)

Extended trick:
If you add quotation marks to the edit, you can insert spaces.
This allows you to create favorites categories.

Example:

PluginSearchComboBox\Item1="Amp"
PluginSearchComboBox\Item2="    GxAmp"
PluginSearchComboBox\Item3="    Swanky"
PluginSearchComboBox\Item4="    Byod"
PluginSearchComboBox\Item5=Equalizer 12
PluginSearchComboBox\Item6=Chorus

You'll see the following in the search drop-down list:

Amp
    GxAmp
    Swanky
    Byod
Equalizer 12
Chorus

The way to do classifications is with regular expressions.

PluginSearchComboBox\Item1=SF2
PluginSearchComboBox\Item2=Drum
PluginSearchComboBox\Item3=Ecualizadores: |EQ st|EQ 12
PluginSearchComboBox\Item4=Compresores: |Calf Compres|/compressor_st|mb_compressor_st|sc_compressor_st
PluginSearchComboBox\Item5=Amplificadores: |(\\sAmp|Ampli|Byod)
PluginSearchComboBox\Item6=MIDI: |midifilter|showmidi|ns/midi
PluginSearchComboBox\Item7=Synths: |oSynth|ySynth|Synthv|orga

So the only thing I miss is a button next to the x to clean with an anchor pin.

Qtractor does allow you to create favorites, but they aren't saved:

MyCategory: |MyFavPlugin1 |MyFavPlugin2

If you continue searching, they'll be lost.

Edit:
I'm actually trying to cover one feature with another.
There's no need a pin to set search filters.
I'm just sharing the trick, which, at least for me, is helpful.

Edit2:
To make the trick work permanently, you can write-protect Qtractor.conf.

This makes it work like a real favorite plugin system.

If you've already set everything up the way you like it... I think it's a good idea in general.
Switching between installed and compiled Qtractors for testing sometimes corrupts Qtractor.conf, and this prevents it.

This is the first time I've locked Qtractor.conf. I don't know if it has any side effects, but so far everything seems to be working fine.

Regards.