Bug 739214 - Cannot make unscoped link to C++ conversion operator

src/doctokenizer.l

@@ -377,6 +377,7 @@ OPNORM    {OPNEW}|{OPDEL}|"+"|"-"|"*"|"/"|"%"|"^"|"&"|"|"|"~"|"!"|"="|"<"|">"|"+
 OPCAST    {BLANK}+[^<(\r\n.,][^(\r\n.,]*
 OPMASK    ({BLANK}*{OPNORM}{FUNCARG})
 OPMASKOPT ({BLANK}*{OPNORM}{FUNCARG}?)|({OPCAST}{FUNCARG})
+OPMASKOP2 ({BLANK}*{OPNORM}{FUNCARG2}?)|({OPCAST}{FUNCARG2})
 LNKWORD1  ("::"|"#")?{SCOPEMASK}
 CVSPEC    {BLANK}*("const"|"volatile")
 LNKWORD2  (({SCOPEPRE}*"operator"{OPMASK})|({SCOPEPRE}"operator"{OPMASKOPT})|(("::"|"#"){SCOPEPRE}*"operator"{OPMASKOPT})){CVSPEC}?
@@ -393,7 +394,8 @@ HTMLKEYU  "STRONG"|"CENTER"|"TABLE"|"CAPTION"|"SMALL"|"CODE"|"DFN"|"VAR"|"IMG"|"
 HTMLKEYW  {HTMLKEYL}|{HTMLKEYU}
 REFWORD2  ("#"|"::")?((({ID}{TEMPLPART}?)|{ANONNS})("."|"#"|"::"|"-"|"/"))*({ID}{TEMPLPART}?(":")?){FUNCARG2}?
 REFWORD3  ({ID}":")*{ID}":"?
-REFWORD   {LABELID}|{REFWORD2}|{REFWORD3}|{LNKWORD2}
+REFWORD4  (({SCOPEPRE}*"operator"{OPMASKOP2})|(("::"|"#"){SCOPEPRE}*"operator"{OPMASKOP2})){CVSPEC}?
+REFWORD   {LABELID}|{REFWORD2}|{REFWORD3}|{REFWORD4}
 
 %option noyywrap
 %option yylineno

testing/064/struct_foo.xml

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<doxygen xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="compound.xsd" version="">
+  <compounddef id="struct_foo" kind="struct" language="C++" prot="public">
+    <compoundname>Foo</compoundname>
+    <sectiondef kind="public-func">
+      <memberdef kind="function" id="struct_foo_1aab9774d892b6cd4a0fbebd034b4c1fad" prot="public" static="no" const="no" explicit="no" inline="no" virt="non-virtual">
+        <type/>
+        <definition>Foo::operator int</definition>
+        <argsstring>()</argsstring>
+        <name>operator int</name>
+        <briefdescription>
+          <para>Conversion to int. </para>
+        </briefdescription>
+        <detaileddescription>
+        </detaileddescription>
+        <inbodydescription>
+        </inbodydescription>
+        <location file="064_castoperator.cpp" line="22" column="1"/>
+      </memberdef>
+      <memberdef kind="function" id="struct_foo_1a870f369cc7af9489418451e78d8bd539" prot="public" static="no" const="yes" explicit="no" inline="no" virt="non-virtual">
+        <type/>
+        <definition>Foo::operator int</definition>
+        <argsstring>() const </argsstring>
+        <name>operator int</name>
+        <briefdescription>
+          <para>Conversion to int const. </para>
+        </briefdescription>
+        <detaileddescription>
+        </detaileddescription>
+        <inbodydescription>
+        </inbodydescription>
+        <location file="064_castoperator.cpp" line="24" column="1"/>
+      </memberdef>
+    </sectiondef>
+    <briefdescription>
+      <para><ref refid="struct_foo" kindref="compound">Foo</ref>. </para>
+    </briefdescription>
+    <detaileddescription>
+      <para>
+        <itemizedlist>
+          <listitem>
+            <para>No autolink for operator int()</para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1aab9774d892b6cd4a0fbebd034b4c1fad" kindref="member">operator int()</ref>
+            </para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1aab9774d892b6cd4a0fbebd034b4c1fad" kindref="member">title</ref>
+            </para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1aab9774d892b6cd4a0fbebd034b4c1fad" kindref="member">Foo::operator int()</ref>
+            </para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1aab9774d892b6cd4a0fbebd034b4c1fad" kindref="member">Foo::operator int()</ref>
+            </para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1aab9774d892b6cd4a0fbebd034b4c1fad" kindref="member">title</ref>
+            </para>
+          </listitem>
+          <listitem>
+            <para>No autolink for operator int() const</para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1a870f369cc7af9489418451e78d8bd539" kindref="member">operator int() const</ref>
+            </para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1a870f369cc7af9489418451e78d8bd539" kindref="member">title</ref>
+            </para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1a870f369cc7af9489418451e78d8bd539" kindref="member">Foo::operator int() const</ref>
+            </para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1a870f369cc7af9489418451e78d8bd539" kindref="member">Foo::operator int() const</ref>
+            </para>
+          </listitem>
+          <listitem>
+            <para>
+              <ref refid="struct_foo_1a870f369cc7af9489418451e78d8bd539" kindref="member">title</ref>
+            </para>
+          </listitem>
+        </itemizedlist>
+      </para>
+    </detaileddescription>
+    <location file="064_castoperator.cpp" bodystart="20" bodyend="25"/>
+    <listofallmembers>
+      <member refid="struct_foo_1aab9774d892b6cd4a0fbebd034b4c1fad" prot="public" virt="non-virtual">
+        <scope>Foo</scope>
+        <name>operator int</name>
+      </member>
+      <member refid="struct_foo_1a870f369cc7af9489418451e78d8bd539" prot="public" virt="non-virtual">
+        <scope>Foo</scope>
+        <name>operator int</name>
+      </member>
+    </listofallmembers>
+  </compounddef>
+</doxygen>

testing/064_castoperator.cpp

+// objective: test linking to the cast operator with and without const
+// check: struct_foo.xml
+/**
+ * @brief Foo
+ *
+ * - No autolink for operator int()
+ * - @ref operator int()
+ * - @ref operator int() "title"
+ * - Foo::operator int()
+ * - @ref Foo::operator int()
+ * - @ref Foo::operator int() "title"
+ *
+ * - No autolink for operator int() const
+ * - @ref operator int() const
+ * - @ref operator int() const "title"
+ * - Foo::operator int() const
+ * - @ref Foo::operator int() const
+ * - @ref Foo::operator int() const "title"
+ */
+struct Foo {
+  /** @brief Conversion to int */
+  operator int();
+  /** @brief Conversion to int const */
+  operator int() const;
+};