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# Description
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Fixes: #13362
This PR fixes the `Display` impl for `CellPath`, as laid out in #13362
and #14090:
```nushell
> $.0."0"
$.0."0"
> $."foo.bar".baz
$."foo.bar".baz
```
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
Cell-paths are now printed using the same `$.` notation that is used to
create them, and ambiguous column names are properly quoted.
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# Description
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This PR fixes the quoting and escaping of column names in `to nuon`.
Before the PR, column names with quotes inside them would get quoted,
but not escaped:
```nushell
> { 'a"b': 2 } | to nuon
{ "a"b": 2 }
> { 'a"b': 2 } | to nuon | from nuon
Error: × error when loading nuon text
╭─[entry #1:1:27]
1 │ { "a\"b": 2 } | to nuon | from nuon
· ────┬────
· ╰── could not load nuon text
╰────
Error: × error when parsing nuon text
╭─[entry #1:1:27]
1 │ { "a\"b": 2 } | to nuon | from nuon
· ────┬────
· ╰── could not parse nuon text
╰────
Error: × error when parsing
╭────
1 │ {"a"b": 2}
· ┬
· ╰── Unexpected end of code.
╰────
> [['a"b']; [2] [3]] | to nuon
[["a"b"]; [2], [3]]
> [['a"b']; [2] [3]] | to nuon | from nuon
Error: × error when loading nuon text
╭─[entry #1:1:32]
1 │ [['a"b']; [2] [3]] | to nuon | from nuon
· ────┬────
· ╰── could not load nuon text
╰────
Error: × error when parsing nuon text
╭─[entry #1:1:32]
1 │ [['a"b']; [2] [3]] | to nuon | from nuon
· ────┬────
· ╰── could not parse nuon text
╰────
Error: × error when parsing
╭────
1 │ [["a"b"]; [2], [3]]
· ┬
· ╰── Unexpected end of code.
╰────
```
After this PR, the quote is escaped properly:
```nushell
> { 'a"b': 2 } | to nuon
{ "a\"b": 2 }
> { 'a"b': 2 } | to nuon | from nuon
╭─────┬───╮
│ a"b │ 2 │
╰─────┴───╯
> [['a"b']; [2] [3]] | to nuon
[["a\"b"]; [2], [3]]
> [['a"b']; [2] [3]] | to nuon | from nuon
╭─────╮
│ a"b │
├─────┤
│ 2 │
│ 3 │
╰─────╯
```
The cause of the issue was that `to nuon` simply wrapped column names in
`'"'` instead of calling `escape_quote_string`.
As part of this change, I also moved the functions related to quoting
(`needs_quoting` and `escape_quote_string`) into `nu-utils`, since
previously they were defined in very ad-hoc places (and, in the case of
`escape_quote_string`, it was defined multiple times with the same
body!).
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
`to nuon` now properly escapes quotes in column names.
# Tests + Formatting
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Make sure you've run and fixed any issues with these commands:
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- `cargo test --workspace` to check that all tests pass (on Windows make
sure to [enable developer
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automatically
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> ```
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All tests pass, including workspace and stdlib tests.
# After Submitting
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PR is merged, if necessary. This will help us keep the docs up to date.
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