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Yuya Nishihara 30984dae4a cli: if enabled, parse path arguments as fileset expressions

If this doesn't work out, maybe we can try one of these:
 a. fall back to bare file name if expression doesn't contain any operator-like
    characters (e.g. "f(x" is an error, but "f x" can be parsed as bare string)
 b. introduce command-line flag to opt in (e.g. -e FILESET)
 c. introduce pattern prefix to opt in (e.g. set:FILESET)

Closes #3239, #2915, #2286

2024-04-12 11:36:40 +09:00

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Filesets

Jujutsu supports a functional language for selecting a set of files. Expressions in this language are called "filesets" (the idea comes from Mercurial). The language consists of file patterns, operators, and functions.

Filesets support is still experimental. It can be enabled by ui.allow-filesets.

ui.allow-filesets = true

File patterns

The following patterns are supported:

"path", path (the quotes are optional), or cwd:"path": Matches cwd-relative path prefix (file or files under directory recursively.)
cwd-file:"path" or file:"path": Matches cwd-relative file (or exact) path.
root:"path": Matches workspace-relative path prefix (file or files under directory recursively.)
root-file:"path": Matches workspace-relative file (or exact) path.

Operators

The following operators are supported. x and y below can be any fileset expressions.

x & y: Matches both x and y.
x | y: Matches either x or y (or both).
x ~ y: Matches x but not y.
~x: Matches everything but x.

You can use parentheses to control evaluation order, such as (x & y) | z or x & (y | z).

Functions

You can also specify patterns by using functions.

all(): Matches everything.
none(): Matches nothing.

Examples

Show diff excluding Cargo.lock.

jj diff '~Cargo.lock'

Split a revision in two, putting foo into the second commit.

jj split '~foo'

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