1 files changed, 39 insertions, 0 deletions
diff --git a/src/tools/clippy/clippy_lints/src/methods/suspicious_command_arg_space.rs b/src/tools/clippy/clippy_lints/src/methods/suspicious_command_arg_space.rs
new file mode 100644
index 000000000..73632c5a3
--- /dev/null
+++ b/src/tools/clippy/clippy_lints/src/methods/suspicious_command_arg_space.rs
@@ -0,0 +1,39 @@
+use clippy_utils::diagnostics::span_lint_and_then;
+use clippy_utils::paths;
+use clippy_utils::ty::match_type;
+use rustc_ast as ast;
+use rustc_errors::{Applicability, Diagnostic};
+use rustc_hir as hir;
+use rustc_lint::LateContext;
+use rustc_span::Span;
+
+use super::SUSPICIOUS_COMMAND_ARG_SPACE;
+
+pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, recv: &'tcx hir::Expr<'_>, arg: &'tcx hir::Expr<'_>, span: Span) {
+    let ty = cx.typeck_results().expr_ty(recv).peel_refs();
+
+    if match_type(cx, ty, &paths::STD_PROCESS_COMMAND)
+        && let hir::ExprKind::Lit(lit) = &arg.kind
+        && let ast::LitKind::Str(s, _) = &lit.node
+        && let Some((arg1, arg2)) = s.as_str().split_once(' ')
+        && arg1.starts_with('-')
+        && arg1.chars().all(|c| c.is_ascii_alphanumeric() || c == '_' || c == '-')
+    {
+        span_lint_and_then(
+            cx,
+            SUSPICIOUS_COMMAND_ARG_SPACE,
+            arg.span,
+            "single argument that looks like it should be multiple arguments",
+            |diag: &mut Diagnostic| {
+                diag.multipart_suggestion_verbose(
+                    "consider splitting the argument",
+                    vec![
+                        (span, "args".to_string()),
+                        (arg.span, format!("[{arg1:?}, {arg2:?}]")),
+                    ],
+                    Applicability::MaybeIncorrect,
+                );
+            }
+        );
+    }
+}