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nushell/crates/nu-command
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Douglas 029f3843d3
Add default --empty to handle empty values (#15223) 
# Description

Adds a new `--empty/-e` flag to the `default` command.

# User-Facing Changes

Before:

```nushell
$env.FOO = ""
$env.FOO = $env.FOO? | default bar
$env.FOO
# => Empty string
```

After:

```nushell
$env.FOO = ""
$env.FOO = $env.FOO? | default -e bar
$env.FOO
# => bar
```

* Uses `val.is_empty`, which means that empty lists and records are also
replaced
* Empty values in tables (with a column specifier) are also replaced.

# Tests + Formatting

7 tests added and 1 updated + 1 new example

- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting

N/A
2025-03-13 19:50:50 +01:00
..
src Add default --empty to handle empty values (#15223) 2025-03-13 19:50:50 +01:00
tests Add default --empty to handle empty values (#15223) 2025-03-13 19:50:50 +01:00
Cargo.toml feat(random uuid): add support for uuid versions other than 4. (#15239) 2025-03-06 14:21:52 +01:00
LICENSE Fix rest of license year ranges (#8727) 2023-04-04 09:03:29 +12:00
README.md Add top-level crate documentation/READMEs (#12907) 2024-07-14 10:10:41 +02:00

README.md

This crate contains the majority of our commands

We allow ourselves to move some of the commands in nu-command to nu-cmd-* crates as needed.

Internal Nushell crate

This crate implements components of Nushell and is not designed to support plugin authors or other users directly.