This Week in Nushell #345

Published Sunday, 2026-04-19, including PRs merged Friday, 2026-03-27 through Thursday, 2026-04-02.

Nushell

• @Juhan280:

  • refactored nu-command tests for reject command (#17968)
  • fixed reject command to properly forward error values (#17961)
  • allowed --content-type to accept null in metadata set (#17944)
  • preserved metadata when rendering Custom value in table command (#17911)
  • fixed cargo doc warnings (#17910)
  • implemented DerefMut for PipelineExecutionData in nu-protocol (#17909)
  • preserved pipeline metadata when detect type cannot determine input (#17906)

• @niklasmarderx:

  • fixed HTTP handling of x- vendor prefix in Content-Type for automatic parsing (#17967)

• @Dexterity104:

  • fixed parse to support char lbrace before trailing capture (#17962)

• @fdncred:

  • reverted "detect lexer-stage errors at highlighting" (#17955)
  • enhanced MCP mode handling and output behavior across commands (#17945)
  • added from md command to convert markdown text into structured data (#17937)
  • updated rmcp to version 1.3.0 and adjusted session manager configuration (#17912)
  • updated IDE help text to specify cursor position and file context (#17905)

• @cptpiepmatz:

  • streamlined CI Cargo checks (#17954)
  • bumped rand and related to 0.10 (#17929)
  • added test_cell_path!() macro (#17927)

• @xtqqczze:

  • fixed failed to parse manifest error (#17950)
  • updated Cargo.toml files to use workspace edition and rust-version (#17931)

• @app/dependabot:

  • bumped uuid from 1.22.0 to 1.23.0 (#17946)

• @smartcoder0777:

  • fixed experimental-options consuming script path (#17943)

• @rayzeller:

  • replaced Span::unknown() with real spans in nu_plugin_polars (#17939)
  • replaced Span::unknown() with real spans in nu-engine (#17938)

• @galuszkak:

  • used strict comparison for float sorting to avoid panics (#17930)

• @WookiesRpeople2:

  • updated noun output to be more compact when --indent n is used (#17928)

• @blindFS:

  • fixed an edge case of parse_unit_value (#17923)
  • added new scope for where condition to allow variables named it (#17908)

• @pickx:

  • detected lexer-stage errors at highlighting (#17917)

• @Rohan5commit:

  • fixed typo in flags section comment (#17915)
  • fixed typo in completer comment (#17904)

Documentation

• @NotTheDr01ds:

  • March TWiNs (#2144)

• @app/dependabot:

  • bumped picomatch (#2142)

nufmt

• @asakura:

  • prevented stripping parens in boolean expressions (#164)

• @fdncred:

  • enhanced formatting with batch fix (#161)
  • refactored test cases and added new fixtures for parser error handling (#148)
  • fixed batch issues (#147)
  • enhanced formatting for pipelines, comments, and for loop calls (#135)