Single line mode

Getting a single line-mode to work is not as straightforward as I thought. It would be nice if this could be added as a configuration option. Here is what worked for me:

        editor.onKeyDown(e => {
            if (e.keyCode == monaco.KeyCode.Enter) {
                // We only prevent enter when the suggest model is not active
                if (editor.getContribution('editor.contrib.suggestController').model.state == 0) {
                    e.preventDefault();
                }
            }
        });
        editor.onDidPaste(e => {
           if (e.range.endLineNumber > 1) {
               let newContent = "";
               let lineCount = textModel.getLineCount();
               for (let i = 0; i < lineCount; i++) {
                   newContent += textModel.getLineContent(i + 1);
               }
               textModel.setValue(newContent);
           }
        });

with the following editor options:

            wordWrap: 'off',
            lineNumbers: 'off',
            lineDecorationsWidth: 0,
            overviewRulerLanes: 0,
            overviewRulerBorder: false,
            scrollbar: { horizontal: 'hidden', vertical: 'hidden' },

But I'm still having problems with removing some of the padding on the left and right side of the editor:

Any idea how to remove that padding?

Start by tracing the editor configuration options and the keydown and paste handlers shown in the issue. Check how single-line behavior, suggestion handling, and editor padding are currently controlled. Done means a configuration option provides single-line mode, prevents unwanted newlines and pasted line breaks, and removes the remaining horizontal padding.