fix #40258: nested string interpolation

fixes #40258
JuliaLang · Mar 29, 2021 · 3d1fec5 · 3d1fec5
1 parent 40267bb
commit 3d1fec5
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Showing 2 changed files with 9 additions and 5 deletions.
diff --git a/src/julia-syntax.scm b/src/julia-syntax.scm
@@ -2383,11 +2383,12 @@
 
    'string
    (lambda (e)
-     (expand-forms
-      `(call (top string) ,@(map (lambda (s)
-                                   (if (and (pair? s) (eq? (car s) 'string))
-                                       (cadr s)
-                                       s))
+     `(call (top string)
+            ,@(apply append (map (lambda (s)
+                                   (let ((s (expand-forms s)))
+                                     (if (and (pair? s) (eq? (car s) 'string))
+                                         (cdr s)
+                                         (list s))))
                                  (cdr e)))))
 
    '|::|

diff --git a/test/syntax.jl b/test/syntax.jl
@@ -2751,3 +2751,6 @@ end
 @test eval(:(x = $(QuoteNode(Core.SlotNumber(1))))) == Core.SlotNumber(1)
 @test_throws ErrorException("syntax: SSAValue objects should not occur in an AST") eval(:(x = $(Core.SSAValue(1))))
 @test_throws ErrorException("syntax: Slot objects should not occur in an AST") eval(:(x = $(Core.SlotNumber(1))))
+
+# issue 40258
+@test "a $("b $("c")")" == "a b c"