Trigger only on exactly 3 characters for C++ completion
Trigger only on exactly 3 characters for C++ completion

Allowing any length more than 2 is too slow at the moment. We'd first
need to find a way to avoid recalculating the complete list of items
for every character while the key isn't matching anything.

maui-packages/qt-creator,xianian/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,KDAB/KDAB-Creator,kuba1/qtcreator,duythanhphan/qt-creator,AltarBeastiful/qt-creator,sandsmark/qtcreator-minimap,KDE/android-qt-creator,jonnor/qt-creator,pcacjr/qt-creator,danimo/qt-creator,colede/qtcreator,maui-packages/qt-creator,KDAB/KDAB-Creator,amyvmiwei/qt-creator,maui-packages/qt-creator,hdweiss/qt-creator-visualizer,malikcjm/qtcreator,yinyunqiao/qtcreator,colede/qtcreator,azat/qtcreator,xianian/qt-creator,sandsmark/qtcreator-minimap,farseerri/git_code,bakaiadam/collaborative_qt_creator,richardmg/qtcreator,darksylinc/qt-creator,jonnor/qt-creator,maui-packages/qt-creator,ostash/qt-creator-i18n-uk,martyone/sailfish-qtcreator,dmik/qt-creator-os2,duythanhphan/qt-creator,jonnor/qt-creator,farseerri/git_code,azat/qtcreator,richardmg/qtcreator,Distrotech/qtcreator,ostash/qt-creator-i18n-uk,danimo/qt-creator,martyone/sailfish-qtcreator,sandsmark/qtcreator-minimap,syntheticpp/qt-creator,KDE/android-qt-creator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,omniacreator/qtcreator,syntheticpp/qt-creator,KDAB/KDAB-Creator,kuba1/qtcreator,duythanhphan/qt-creator,Distrotech/qtcreator,KDE/android-qt-creator,xianian/qt-creator,bakaiadam/collaborative_qt_creator,kuba1/qtcreator,amyvmiwei/qt-creator,azat/qtcreator,hdweiss/qt-creator-visualizer,kuba1/qtcreator,danimo/qt-creator,ostash/qt-creator-i18n-uk,AltarBeastiful/qt-creator,ostash/qt-creator-i18n-uk,farseerri/git_code,darksylinc/qt-creator,sandsmark/qtcreator-minimap,darksylinc/qt-creator,dmik/qt-creator-os2,pcacjr/qt-creator,martyone/sailfish-qtcreator,syntheticpp/qt-creator,omniacreator/qtcreator,Distrotech/qtcreator,maui-packages/qt-creator,syntheticpp/qt-creator,martyone/sailfish-qtcreator,KDAB/KDAB-Creator,Distrotech/qtcreator,pcacjr/qt-creator,pcacjr/qt-creator,bakaiadam/collaborative_qt_creator,jonnor/qt-creator,colede/qtcreator,martyone/sailfish-qtcreator,hdweiss/qt-creator-visualizer,bakaiadam/collaborative_qt_creator,martyone/sailfish-qtcreator,danimo/qt-creator,colede/qtcreator,jonnor/qt-creator,yinyunqiao/qtcreator,KDAB/KDAB-Creator,richardmg/qtcreator,KDE/android-qt-creator,azat/qtcreator,bakaiadam/collaborative_qt_creator,dmik/qt-creator-os2,kuba1/qtcreator,colede/qtcreator,darksylinc/qt-creator,Distrotech/qtcreator,xianian/qt-creator,renatofilho/QtCreator,hdweiss/qt-creator-visualizer,danimo/qt-creator,danimo/qt-creator,dmik/qt-creator-os2,azat/qtcreator,renatofilho/QtCreator,farseerri/git_code,hdweiss/qt-creator-visualizer,kuba1/qtcreator,richardmg/qtcreator,Distrotech/qtcreator,AltarBeastiful/qt-creator,yinyunqiao/qtcreator,sandsmark/qtcreator-minimap,martyone/sailfish-qtcreator,farseerri/git_code,farseerri/git_code,xianian/qt-creator,pcacjr/qt-creator,omniacreator/qtcreator,malikcjm/qtcreator,omniacreator/qtcreator,KDE/android-qt-creator,syntheticpp/qt-creator,darksylinc/qt-creator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,bakaiadam/collaborative_qt_creator,richardmg/qtcreator,KDE/android-qt-creator,maui-packages/qt-creator,duythanhphan/qt-creator,danimo/qt-creator,malikcjm/qtcreator,amyvmiwei/qt-creator,malikcjm/qtcreator,azat/qtcreator,dmik/qt-creator-os2,syntheticpp/qt-creator,duythanhphan/qt-creator,richardmg/qtcreator,farseerri/git_code,yinyunqiao/qtcreator,malikcjm/qtcreator,maui-packages/qt-creator,omniacreator/qtcreator,xianian/qt-creator,AltarBeastiful/qt-creator,darksylinc/qt-creator,danimo/qt-creator,KDE/android-qt-creator,sandsmark/qtcreator-minimap,syntheticpp/qt-creator,colede/qtcreator,xianian/qt-creator,renatofilho/QtCreator,ostash/qt-creator-i18n-uk,yinyunqiao/qtcreator,hdweiss/qt-creator-visualizer,pcacjr/qt-creator,Distrotech/qtcreator,xianian/qt-creator,ostash/qt-creator-i18n-uk,duythanhphan/qt-creator,renatofilho/QtCreator,amyvmiwei/qt-creator,pcacjr/qt-creator,AltarBeastiful/qt-creator,dmik/qt-creator-os2,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,KDE/android-qt-creator,kuba1/qtcreator,colede/qtcreator,martyone/sailfish-qtcreator,farseerri/git_code,kuba1/qtcreator,yinyunqiao/qtcreator,malikcjm/qtcreator,renatofilho/QtCreator,duythanhphan/qt-creator,kuba1/qtcreator,dmik/qt-creator-os2,malikcjm/qtcreator,renatofilho/QtCreator,bakaiadam/collaborative_qt_creator,ostash/qt-creator-i18n-uk,yinyunqiao/qtcreator,darksylinc/qt-creator,danimo/qt-creator,darksylinc/qt-creator,jonnor/qt-creator,omniacreator/qtcreator,omniacreator/qtcreator,richardmg/qtcreator,KDAB/KDAB-Creator