[Text Editor] Shift+Tab shortcut only works when multiple lines are selected

[nonunknown]

Godot version

v4.0.dev.custom_build [cb4e421]

System information

manjaro Gnome 21, AMD R7 200 series, Intel i3 3.0 GHZ,8GB RAM

Issue description

When you select multiple lines and press SHIFT+TAB the tab goes back one step which is ok:
before:

after:

But if the cursor is over one line only (without selecting) SHIFT+TAB doesnt work:
before:

after:

PS: it only works if the single line is selected, but without any selection it doesnt work!

Steps to reproduce

• Select Multiple lines
• press the shortcut
• put the cursor at a single line without selection
• press the shortcut

Minimal reproduction project

N/a

[Calinou]

As far as I know, this doesn't occur in 3.3.2.

[ghost]

What is the desired behavior? It seems like Godot 3 always unindents the line the cursor was on, but Godot 4 appears to have changed it to only remove tabs and spaces the cursor is touching.

[Calinou]

What is the desired behavior? It seems like Godot 3 always unindents the line the cursor was on, but Godot 4 appears to have changed it to only remove tabs and spaces the cursor is touching.

The 3.x behavior definitely feels more natural to me.