Gedit
Key bindings
Insert tab when Insert spaces instead of tabs option is enabled
Ctrl + Shift + U 9
Indent code block
Select block + Tab
Unindent code block
Select block + Shift + Tab
Insert tab when Insert spaces instead of tabs option is enabled
Ctrl + Shift + U 9
Indent code block
Select block + Tab
Unindent code block
Select block + Shift + Tab