better error for esc outside of macro expansion (#55797)

fixes #55788 --------- Co-authored-by: Jeff Bezanson <[email protected]>
JuliaLang · Sep 21, 2024 · 911e025 · 911e025
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commit 911e025
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diff --git a/src/julia-syntax.scm b/src/julia-syntax.scm
@@ -5001,6 +5001,10 @@ f(x) = yt(x)
             ((≔ ⩴ ≕ :=)
              (error (string "unsupported assignment operator \"" (deparse (car e)) "\"")))
 
+            ;; bare :escape
+            ((escape)
+             (error (string "\"esc(...)\" used outside of macro expansion")))
+
             ((error)
              (error (cadr e)))
             (else

diff --git a/test/syntax.jl b/test/syntax.jl
@@ -3985,3 +3985,5 @@ begin
   end
 end
 @test f45494() === (0,)
+
+@test_throws "\"esc(...)\" used outside of macro expansion" eval(esc(:(const x=1)))