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| H A D | .gitattributes | diff 8f8d4be9fb69ce0aa8f87570d9a71413ff726982 Wed Apr 19 01:30:48 CEST 2023 Miguel Ojeda <ojeda@kernel.org> .gitattributes: set diff driver for Rust source code files
Git supports a builtin Rust diff driver [1] since v2.23.0 (2019).
It improves the choice of hunk headers in some cases, such as
diffs within methods, since those are indented in Rust within
an `impl` block, and therefore the default diff driver would
pick the outer `impl` block instead (rather than the method
where the changed code is).
For instance, with the default diff driver:
@@ -455,6 +455,8 @@ impl fmt::Write for RawFormatter {
// Amount that we can copy. `saturating_sub` ensures we get 0 if `pos` goes past `end`.
let len_to_copy = core::cmp::min(pos_new, self.end).saturating_sub(self.pos);
+ test_diff_driver();
+
if len_to_copy > 0 {
// SAFETY: If `len_to_copy` is non-zero, then we know `pos` has not gone past `end`
// yet, so it is valid for write per the type invariants.
With the Rust diff driver:
@@ -455,6 +455,8 @@ fn write_str(&mut self, s: &str) -> fmt::Result {
// Amount that we can copy. `saturating_sub` ensures we get 0 if `pos` goes past `end`.
let len_to_copy = core::cmp::min(pos_new, self.end).saturating_sub(self.pos);
+ test_diff_driver();
+
if len_to_copy > 0 {
// SAFETY: If `len_to_copy` is non-zero, then we know `pos` has not gone past `end`
// yet, so it is valid for write per the type invariants.
Thus set the `rust` diff driver for `*.rs` source files.
The Rust repository also does so since 2020 [2].
Link: https://git-scm.com/docs/gitattributes#_defining_a_custom_hunk_header [1]
Link: https://github.com/rust-lang/rust/pull/78882 [2]
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Link: https://lore.kernel.org/r/20230418233048.335281-1-ojeda@kernel.org
[ Added link to Rust repository ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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