misc/notepadplus: add Function List support

Fixes #6045.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/12463043

misc/notepadplus/README

@@ -35,3 +35,25 @@ Reference
 
   1. http://sourceforge.net/apps/mediawiki/notepad-plus/index.php?title=Auto_Completion
 
+Notepad++ Function List
+-----------------------
+
+The functionList.xml uses the Function List Pane new feature,
+which needs Notepad++ v6.4 or higher.
+
+Installing from Notepad++ Installer
+
+  1. Add the contents of userDefineLang.xml at %APPDATA%\Notepad++\functionList.xml
+     between <associationMap> ... </associationMap> and <parsers> ... </parsers>
+  2. Restart Notepad++
+
+Installing from Notepad++ zip/7z package
+
+  1. Given a Notepad++ installation at <DIR>.
+  2. Add the contents of functionList.xml at <DIR>\functionList.xml
+     between <associationMap> ... </associationMap> and <parsers> ... </parsers>
+  3. Restart Notepad++
+
+Reference
+
+  1. http://notepad-plus-plus.org/features/function-list.html

misc/notepadplus/functionList.xml

+<!-- <NotepadPlus> -->
+	<!-- <functionList> -->
+		<!-- <associationMap> -->
+			<association ext=".go" id="go"/>
+
+		<!-- </associationMap> -->
+		<!-- <parsers> -->
+			<parser id="go" displayName="Go" commentExpr="((/\*.*?\*)/|(//.*?$))">
+				<function
+				    mainExpr="(^func\s+[\w]+)|(^func\s*\(\s*[\w]+\s+\*?\s*[\w]+\s*\)\s*[\w]+)"
+					displayMode="$className->$functionName">
+					<functionName>
+						<nameExpr expr="(((func)[\s][\w]+)|(\(\s*[\w]+\s+\*?\s*[\w]+\s*\)\s*[\w]+))"/>
+						<nameExpr expr="(((func)[\s][\w]+)|(\)\s*[\w]+))"/>
+						<nameExpr expr="(([\s][\w]+)|(\)\s*[\w]+))"/>
+						<nameExpr expr="[\w]+"/>
+					</functionName>
+					<className>
+						<nameExpr expr="\(\s*[\w]+\s+\*?\s*[\w]+\s*\)\s*[\w]+"/>
+						<nameExpr expr="\(\s*[\w]+\s+\*?\s*[\w]+\s*\)"/>
+						<nameExpr expr="[\w]+\s+\*?\s*[\w]+\s*\)"/>
+						<nameExpr expr="\*?\s*[\w]+\s*\)"/>
+						<nameExpr expr="[\w]+\s*\)"/>
+						<nameExpr expr="[\w]+"/>
+					</className>
+				</function>
+			</parser>
+
+		<!-- </parsers> -->
+	<!-- </functionList> -->
+<!-- </NotepadPlus> -->