bug#70929: 30.0.50; eglot--apply-text-edits prevents point adjustment

[Eli Zaretskii <eliz@gnu.org>]

> From: Troy Brown <brownts@troybrown.dev>
> Date: Mon, 13 May 2024 22:15:07 -0400
> 
> Language Servers may use onTypeFormatting to provide indentation for a
> buffer.  When this happens, the language server will indicate a
> newline trigger character (in the DocumentOnTypeFormattingOptions).
> In the Emacs buffer, after hitting RET, point is moved to the next
> line and a textDocument/onTypeFormatting request is sent from Eglot to
> the server.  The server responds back with the corresponding spacing
> prefix for the line in newText of the TextEdit response.  However,
> when Eglot applies the text edit to insert this spacing, via
> eglot--apply-text-edits, it uses save-excursion, and this prevents the
> point from being pushed to the end of the inserted spacing.  It would
> seem that save-excursion should be avoided when applying text edits.
> This issue has been observed with the Ada Language Server.

Thanks.

João, any comments or suggestions?