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42060df29a
Summary: Makes the following improvements to formula autocomplete: - When a user types `$RefCol` (or part of it), also show `$RefCol.VisibleCol` (replace actual column names) in the autocomplete even before the `.` is typed, to help users understand the difference between a raw reference/record and its visible column. - When a user types a table name, show `.lookupOne` and `.lookupRecords` in the autocomplete, again even before the `.` is typed. - For `.lookupRecords(` and `.lookupOne(`, once the `(` is entered, suggest each column name as a keyword argument. - Also suggest lookup arguments involving compatible reference columns, especially 'reverse reference' lookups like `refcol=$id` which are very common and difficult for users. - To support these features, the Ace editor autocomplete needs some patching to fetch fresh autocomplete options after typing `.` or `(`. This also improves unrelated behaviour that wasn't great before when one column name is contained in another. See the first added browser test. Discussions: - https://grist.slack.com/archives/CDHABLZJT/p1659707068383179 - https://grist.quip.com/HoSmAlvFax0j#MbTADAH5kgG - https://grist.quip.com/HoSmAlvFax0j/Formula-Improvements#temp:C:MbT3649fe964a184e8dada9bbebb Test Plan: Added Python and nbrowser tests. Reviewers: paulfitz Reviewed By: paulfitz Differential Revision: https://phab.getgrist.com/D3580