Editor removes my leading blanks

[JohnScholes]

Describe the issue you are having

In an edit window, hitting enter in the left margin removes any leading blanks.

Did you connect to an already running interpreter or start the interpreter from RIDE?

Start

How do you reproduce the issue?

      )ed →cvec
in the edit window, type four blanks, followed by "hello"
move the cursor to the left margin and hit Return.
The "hello" moves down to the next line but my indentation has disappeared.

Notepad, ODE, textedit, ... preserve my blanks in this situation.
Happily, typing a backspace in the left margin, correctly joins any following text to the previous line and keeps my blanks.

Paste the contents of Help → About (Shift+F1)

IDE:
Version: 4.0.2789
Platform: MacIntel
Date: 2017-04-25 11:38:17 +0100
Git commit: 5700c3d
Preferences:{
"autocompletion":"0",
"kbdLocale":"en_US_Mac",
"lineNums":"0",
"pfkeys":"["","","","","","","","","","",")reset)save","",""]",
"squiggleTips":"0",
"valueTips":"0",
"zoom":"6"
}

Interpreter:
Version: 16.0.29826
Platform: Mac-64
Edition: Unicode/64
Date: Apr 27 2017 at 02:30:17

[ngn]

The fix for this one is a bit tricky.
cm.setOption('smartIndent',false) would still make the new line copy the previous line's indent, though not in a "smart" way. Technically, that works as documented.
The way I would work around it is make <ER> check the editor's mode, and if it's not APL, do cm.replaceSelection('\n','end') instead of cm.execCommand('newlineAndIndent').

It might also be worth chatting with Marijn and contributors about smartIndent's documented vs expected behaviour.

[e9gille]

thanks @ngn , will put in your suggestion