Some completion items do not have insertText

[mjshashank]

I have been trying to integrate this project as an LSP server for an editor. I've noticed that some of the completions do not have an insertText field.
Eg:
1.

{ label: 'import',
kind: 14,
sortText: '999999213',
data: [Object] }

{ label: 'java.io',
kind: 9,
sortText: '999999215',
 data: [Object] }

How is this expected to be handled with respect to the value to be inserted?

Because inserting the label would mean a lot of redundant characters are being inserted (like in example 2, where after inserting label the code in the editor would become java.java.io instead of java.io).

[puremourning]

Well, it's a pain. First, insertText is optional, and deprecated, and falls back to label:

	/**
	 * A string that should be inserted into a document when selecting
	 * this completion. When `falsy` the label is used.
	 * 
	 * The `insertText` is subject to interpretation by the client side.
	 * Some tools might not take the string literally. For example
	 * VS Code when code complete is requested in this example `con<cursor position>`
	 * and a completion item with an `insertText` of `console` is provided it
	 * will only insert `sole`. Therefore it is recommended to use `textEdit` instead
	 * since it avoids additional client side interpretation.
	 *
	 * @deprecated Use textEdit instead.
	 */
	insertText?: string;

In order to get the textEdit you have to use the resolve request.

Depending on your editor, this may be difficult. As you can see VSCode actually does a text overlap check on the inserted label.

It wasn't a lot of fun adding this to YouCompleteMe.

[puremourning]

See also:

#465
#353