nushell/crates/nu-cmd-base/src
Wind 28ed0fe700
Improves commands that support range input (#13113)
# Description
Fixes: #13105
Fixes: #13077

This pr makes `str substring`, `bytes at` work better with negative
index.

And it also fixes the false range semantic on `detect columns -c` in
some cases.

# User-Facing Changes
For `str substring`, `bytes at`, it will no-longer return an error if
start index is larger than end index. It makes sense to return an empty
string of empty bytes directly.

### Before
```nushell
# str substring
❯ ("aaa" | str substring 2..-3) == ""
Error: nu:🐚:type_mismatch

  × Type mismatch.
   ╭─[entry #23:1:10]
 1 │ ("aaa" | str substring 2..-3) == ""
   ·          ──────┬──────
   ·                ╰── End must be greater than or equal to Start
 2 │ true
   ╰────

# bytes at
❯ ("aaa" | encode utf-8 | bytes at 2..-3) == ("" | encode utf-8)
Error: nu:🐚:type_mismatch

  × Type mismatch.
   ╭─[entry #27:1:25]
 1 │ ("aaa" | encode utf-8 | bytes at 2..-3) == ("" | encode utf-8)
   ·                         ────┬───
   ·                             ╰── End must be greater than or equal to Start
   ╰────
```
### After
```nushell
# str substring
❯ ("aaa" | str substring 2..-3) == ""
true

# bytes at
❯  ("aaa" | encode utf-8 | bytes at 2..-3) == ("" | encode utf-8)
true
```
# Tests + Formatting
Added some tests, adjust existing tests
2024-06-18 07:19:13 -05:00
..
formats Use Record's public API in a bunch of places (#10927) 2023-11-08 14:24:00 +01:00
hook.rs Add derive macros for FromValue and IntoValue to ease the use of Values in Rust code (#13031) 2024-06-17 16:05:11 -07:00
input_handler.rs Add command_prelude module (#12291) 2024-03-26 21:17:30 +00:00
lib.rs Unify glob behavior on open, rm, cp-old, mv, umv, cp and du commands (#11621) 2024-01-26 21:57:35 +08:00
util.rs Improves commands that support range input (#13113) 2024-06-18 07:19:13 -05:00