Install

tokf install e9a2b6130b730facfd3e688033a4c64da01d7ce52b34d9925761ef5ea1a22020

Safety checks passed

Filter definition

command = "cargo fmt"

# Auto-fixable: formatting diffs detected by "Diff in " header from rustfmt.
# Shows file list extracted via template pipe from raw output.
match_output = [
  { contains = "Diff in ", output = "✗ formatting issues — run `cargo fmt` to fix:\n{output | lines | keep: \"^Diff in \" | join: \"\\n\"}" },
]

[on_success]
output = "✓ cargo fmt: ok"

[on_failure]
# Non-auto-fixable: syntax errors (no "Diff in" in output)
tail = 20

Examples

check failure shows file list and fix hint ~138 tokens → ~37 tokens (73% saved)

Raw output

Diff in /home/user/project/src/main.rs at line 1:
--- /home/user/project/src/main.rs	2024-01-01 00:00:00.000000000 +0000
+++ /home/user/project/src/main.rs	2024-01-01 00:00:00.000000000 +0000
@@ -1,5 +1,5 @@
-fn main()  {
+fn main() {
     println!("hello");
 }
Diff in /home/user/project/src/lib.rs at line 3:
--- /home/user/project/src/lib.rs	2024-01-01 00:00:00.000000000 +0000
+++ /home/user/project/src/lib.rs	2024-01-01 00:00:00.000000000 +0000
@@ -3,5 +3,5 @@
-pub fn add( a: i32,b: i32) -> i32 {
+pub fn add(a: i32, b: i32) -> i32 {
     a + b
 }

Filtered output

✗ formatting issues — run `cargo fmt` to fix:
Diff in /home/user/project/src/main.rs at line 1:
Diff in /home/user/project/src/lib.rs at line 3:

success produces ok message ~0 tokens → ~4 tokens

Raw output

Filtered output

✓ cargo fmt: ok

syntax error shows raw error output ~49 tokens → ~49 tokens

Raw output

error: failed to parse src/broken.rs: expected expression, found `}`
 --> src/broken.rs:5:1
  |
5 | fn broken( {
  | ^^^^^^^^^^^^ expected one of `)`, `,`, `_`, `mut`, `ref`, pattern, or identifier

Filtered output

error: failed to parse src/broken.rs: expected expression, found `}`
 --> src/broken.rs:5:1
  |
5 | fn broken( {
  | ^^^^^^^^^^^^ expected one of `)`, `,`, `_`, `mut`, `ref`, pattern, or identifier

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