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# Description Fixes #13359 In an attempt to generate names for flat columns resulting from a nested accesses #3016 generated new column names on nested selection, out of convenience, that composed the cell path as a string (including `.`) and then simply replaced all `.` with `_`. As we permit `.` in column names as long as you quote this surprisingly alters `select`ed columns. # User-Facing Changes New columns generated by selection with nested cell paths will for now be named with a string containing the keys separated by `.` instead of `_`. We may want to reconsider the semantics for nested access. # Tests + Formatting - Alter test to breaking change on nested `select`
Nushell core libraries and plugins
These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.
Foundational libraries are split into two kinds of crates:
- Core crates - those crates that work together to build the Nushell language engine
- Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.
Plugins are likewise also split into two types:
- Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
- Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.