From 4e82a19bd952d17079289f1b1c27a315468dbaeb Mon Sep 17 00:00:00 2001
From: Rajkumar Natarajan <rajkumar.natarajan@synacor.com>
Date: Sun, 29 Nov 2020 00:38:28 -0500
Subject: [PATCH] 6399 Lint: is_ascii_digit instead of is_digit

---
 clippy_lints/src/doc.rs                   | 2 +-
 clippy_lints/src/misc_early.rs            | 2 +-
 clippy_lints/src/non_expressive_names.rs  | 2 +-
 clippy_lints/src/utils/numeric_literal.rs | 2 +-
 tests/ui/to_digit_is_some.fixed           | 2 +-
 tests/ui/to_digit_is_some.rs              | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/clippy_lints/src/doc.rs b/clippy_lints/src/doc.rs
index edecba57e44f..040e96643467 100644
--- a/clippy_lints/src/doc.rs
+++ b/clippy_lints/src/doc.rs
@@ -543,7 +543,7 @@ fn check_word(cx: &LateContext<'_>, word: &str, span: Span) {
     /// letters (`Clippy` is ok) and one lower-case letter (`NASA` is ok).
     /// Plurals are also excluded (`IDs` is ok).
     fn is_camel_case(s: &str) -> bool {
-        if s.starts_with(|c: char| c.is_digit(10)) {
+        if s.starts_with(|c: char| c.is_ascii_digit()) {
             return false;
         }
 
diff --git a/clippy_lints/src/misc_early.rs b/clippy_lints/src/misc_early.rs
index 5bc45c87874b..c7a5a7984b14 100644
--- a/clippy_lints/src/misc_early.rs
+++ b/clippy_lints/src/misc_early.rs
@@ -425,7 +425,7 @@ impl MiscEarlyLints {
         // See <https://github.com/rust-lang/rust-clippy/issues/4507> for a regression.
         // FIXME: Find a better way to detect those cases.
         let lit_snip = match snippet_opt(cx, lit.span) {
-            Some(snip) if snip.chars().next().map_or(false, |c| c.is_digit(10)) => snip,
+            Some(snip) if snip.chars().next().map_or(false, |c| c.is_ascii_digit()) => snip,
             _ => return,
         };
 
diff --git a/clippy_lints/src/non_expressive_names.rs b/clippy_lints/src/non_expressive_names.rs
index 5b42b61fcde9..11b3196f86db 100644
--- a/clippy_lints/src/non_expressive_names.rs
+++ b/clippy_lints/src/non_expressive_names.rs
@@ -190,7 +190,7 @@ impl<'a, 'tcx, 'b> SimilarNamesNameVisitor<'a, 'tcx, 'b> {
         if interned_name.chars().any(char::is_uppercase) {
             return;
         }
-        if interned_name.chars().all(|c| c.is_digit(10) || c == '_') {
+        if interned_name.chars().all(|c| c.is_ascii_digit() || c == '_') {
             span_lint(
                 self.0.cx,
                 JUST_UNDERSCORES_AND_DIGITS,
diff --git a/clippy_lints/src/utils/numeric_literal.rs b/clippy_lints/src/utils/numeric_literal.rs
index d02603d7702c..2fe94c90d9e5 100644
--- a/clippy_lints/src/utils/numeric_literal.rs
+++ b/clippy_lints/src/utils/numeric_literal.rs
@@ -50,7 +50,7 @@ impl<'a> NumericLiteral<'a> {
     }
 
     pub fn from_lit_kind(src: &'a str, lit_kind: &LitKind) -> Option<NumericLiteral<'a>> {
-        if lit_kind.is_numeric() && src.chars().next().map_or(false, |c| c.is_digit(10)) {
+        if lit_kind.is_numeric() && src.chars().next().map_or(false, |c| c.is_ascii_digit()) {
             let (unsuffixed, suffix) = split_suffix(&src, lit_kind);
             let float = matches!(lit_kind, LitKind::Float(..));
             Some(NumericLiteral::new(unsuffixed, suffix, float))
diff --git a/tests/ui/to_digit_is_some.fixed b/tests/ui/to_digit_is_some.fixed
index 19184df0becb..356c8a36f417 100644
--- a/tests/ui/to_digit_is_some.fixed
+++ b/tests/ui/to_digit_is_some.fixed
@@ -6,6 +6,6 @@ fn main() {
     let c = 'x';
     let d = &c;
 
-    let _ = d.is_digit(10);
+    let _ = d.is_ascii_digit();
     let _ = char::is_digit(c, 10);
 }
diff --git a/tests/ui/to_digit_is_some.rs b/tests/ui/to_digit_is_some.rs
index 45a6728ebf57..46570f96c476 100644
--- a/tests/ui/to_digit_is_some.rs
+++ b/tests/ui/to_digit_is_some.rs
@@ -6,6 +6,6 @@ fn main() {
     let c = 'x';
     let d = &c;
 
-    let _ = d.to_digit(10).is_some();
+    let _ = d.is_ascii_digit().is_some();
     let _ = char::to_digit(c, 10).is_some();
 }