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JetBrains unveils first early-access build for MPS 2020.1

MPS 2020.1 will benefit from better editor usability, including new features that appear in the first build in the early-access programme, according to JetBrains.

Type over existing text (MPS-31209) is a new feature that makes the projectional editor feel a bit more like a text editor.

“When typing into a text cell, if the character you just typed was already present at the cursor position, then the cursor will move over as if you just overwrote the existing character,” reports Oscar Rodriguez, blogging for JetBrains.

In addition, users will get the ability to use different separators depending on the list position.

“When editing nodes with cardinality (0,n) or (1,n), you have the ability to provide a custom separator between values by implementing a separator query function. This feature extends that capability by passing more arguments to the query function,” says Rodriguez.

The functionality of SingleLineComment has also been slightly enhanced, and the new MultiLineComment concept has been introduced into BaseLanguage to provide support for comments delimited with the /* … */ symbols, he explains.

Users will also be able to merge named and default menus when transforming or substituting menus. The menu type is now selected in the menu editor.

“And that’s not all! We’ve also fixed a bunch of bugs. You can see the whole list here,” writes Rodriguez.

Download JetBrains MPS 2020.1 EAP here

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