From fa7ce1806fdd9d8bc13fb5ca6fda39730fed17b0 Mon Sep 17 00:00:00 2001
From: Jeff Bezanson <jeff.bezanson@gmail.com>
Date: Mon, 15 Nov 2021 14:28:56 -0500
Subject: [PATCH] fix #41727, field doc string with interpolation (#43061)

---
 src/julia-syntax.scm | 2 +-
 test/docs.jl         | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/julia-syntax.scm b/src/julia-syntax.scm
index 35acc10eec6fb1..bfd3c8fface0da 100644
--- a/src/julia-syntax.scm
+++ b/src/julia-syntax.scm
@@ -904,7 +904,7 @@
                                x))
                          fields)))
           (attrs (reverse attrs))
-          (defs        (filter (lambda (x) (not (effect-free? x))) defs))
+          (defs        (filter (lambda (x) (not (or (effect-free? x) (eq? (car x) 'string)))) defs))
           (locs        (if (and (pair? fields0) (linenum? (car fields0)))
                            (list (car fields0))
                            '()))
diff --git a/test/docs.jl b/test/docs.jl
index 41c3746d7476f3..762a481ee4801d 100644
--- a/test/docs.jl
+++ b/test/docs.jl
@@ -1504,3 +1504,12 @@ end
 # Issue #13109
 eval(Expr(:block, Expr(:macrocall, GlobalRef(Core, Symbol("@doc")), nothing, "...", Expr(:module, false, :MBareModuleEmpty, Expr(:block)))))
 @test docstrings_equal(@doc(MBareModuleEmpty), doc"...")
+
+# issue #41727
+"struct docstring"
+struct S41727
+    "x is $(2*2)"
+    x
+end
+@test S41727(1) isa S41727
+@test string(@repl S41727.x) == "x is 4\n"