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December 15, 2019 02:34 pm

Vim Releases 'Killersheep' Game To Demo Two New Features In Vim 8.2

The creators of Vim have released a game called "Killersheep" to show off two new features in Vim 8.2. "Before I did the keynote at VimConf 2018 I asked plugin developers what they wanted from Vim," reads the announcement at Vim.org. "The result was a very long list of requested features. The top two items were clear: Popup windows and text properties."After more than a year of development the new features are now ready for the Vim crowds. Popup windows make it possible to show messages, function prototypes, code snippets and anything else on top of the text being edited. They open and close quickly and can be highlighted in many ways... This was no small effort. Although the existing window support could be used, popup windows are different enough to require a lot of extra logic. Especially to update the screen efficiently. Also to make it easy for plugin writers to use them; you don't need to tell Vim exactly where to show one, just give a reference point and the text to display, Vim will figure out the size and where the popup fits best. Text properties can be used for something as simple as highlighting a text snippet or something as complicated as using an external parser to locate syntax items and highlight them asynchronously. This can be used instead of the pattern based syntax highlighting. A text property sticks with the text, also when inserting a word before it. And this is done efficiently by storing the properties with the text.

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