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1
AtomVS Code
Notepad++
Sublime Text
RStudioMonacoIntelliJ IDEA
CodeMirror hints-addon
EclipseVisual StudioXCode
2
autocomplete
always-onalways-onalways-onalways-onalways-onalways-onCtrl-SpaceCtrl-SpaceCtrl-Space
automatic after . or ::, Ctrl-J manual
escape