diff --git a/race.log b/race.log
deleted file mode 100644
index 87738a5..0000000
--- a/race.log
+++ /dev/null
@@ -1,275 +0,0 @@
-mkdir -p "/home/ndumas/work/wikilink-parser/reports"
-mkdir -p "/home/ndumas/work/wikilink-parser/dist"
-go clean code.ndumas.com/ndumas/wikilink-parser
-rm -vrf "/home/ndumas/work/wikilink-parser/dist"/*
-rm -vf "/home/ndumas/work/wikilink-parser/reports"/*
-removed '/home/ndumas/work/wikilink-parser/reports/test.out'
-go get -d -t code.ndumas.com/ndumas/wikilink-parser/...
-go install golang.org/x/tools/cmd/stringer@latest
-go generate
-go test -race -v -tags "release" $(go list "code.ndumas.com/ndumas/wikilink-parser/..." | grep -v /vendor/) | tee "/home/ndumas/work/wikilink-parser/reports/test.out"
-=== RUN   Test_Lexer
-=== RUN   Test_Lexer/wikilink
-2023/07/01 18:25:42 lexText
-2023/07/01 18:25:42 lexOpenLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":2,"width":0,"item":"ItemOpenLink:\"[[\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":10,"width":1,"item":"ItemIdent:\"wikilink\""}
-2023/07/01 18:25:42 lexCloseLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":12,"width":1,"item":"ItemCloseLink:\"]]\""}
-=== RUN   Test_Lexer/wikilink|display_name
-2023/07/01 18:25:42 lexText
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":12,"width":0,"item":"ItemText:\"\""}
-2023/07/01 18:25:42 lexText
-2023/07/01 18:25:42 lexOpenLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":2,"width":0,"item":"ItemOpenLink:\"[[\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":10,"width":1,"item":"ItemIdent:\"wikilink\""}
-2023/07/01 18:25:42 lexAlias
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":11,"width":1,"item":"ItemAlias:\"|\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":23,"width":1,"item":"ItemIdent:\"display name\""}
-2023/07/01 18:25:42 lexCloseLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":25,"width":1,"item":"ItemCloseLink:\"]]\""}
-=== RUN   Test_Lexer/wikilink|display_name|second_pipe
-2023/07/01 18:25:42 lexText
-2023/07/01 18:25:42 lexOpenLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":2,"width":0,"item":"ItemOpenLink:\"[[\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":10,"width":1,"item":"ItemIdent:\"wikilink\""}
-2023/07/01 18:25:42 lexAlias
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":11,"width":1,"item":"ItemAlias:\"|\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":23,"width":1,"item":"ItemIdent:\"display name\""}
-2023/07/01 18:25:42 lexText
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":25,"width":0,"item":"ItemText:\"\""}
-2023/07/01 18:25:42 lexAlias
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":24,"width":1,"item":"ItemAlias:\"|\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":35,"width":1,"item":"ItemIdent:\"second pipe\""}
-2023/07/01 18:25:42 lexCloseLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":37,"width":1,"item":"ItemCloseLink:\"]]\""}
-=== RUN   Test_Lexer/wikilink_with_numeric_alias|420|second_pipe
-2023/07/01 18:25:42 lexText
-2023/07/01 18:25:42 lexOpenLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":2,"width":0,"item":"ItemOpenLink:\"[[\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":10,"width":1,"item":"ItemIdent:\"wikilink\""}
-2023/07/01 18:25:42 lexAlias
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":11,"width":1,"item":"ItemAlias:\"|\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":14,"width":1,"item":"ItemIdent:\"420\""}
-2023/07/01 18:25:42 lexAlias
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":15,"width":1,"item":"ItemAlias:\"|\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":26,"width":1,"item":"ItemIdent:\"second pipe\""}
-2023/07/01 18:25:42 lexCloseLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":28,"width":1,"item":"ItemCloseLink:\"]]\""}
-=== RUN   Test_Lexer/wikilink_with_spaces_in_filename
-2023/07/01 18:25:42 lexText
-2023/07/01 18:25:42 lexOpenLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":2,"width":0,"item":"ItemOpenLink:\"[[\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":17,"width":1,"item":"ItemIdent:\"wikilink spaces\""}
-2023/07/01 18:25:42 lexCloseLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":19,"width":1,"item":"ItemCloseLink:\"]]\""}
-=== RUN   Test_Lexer/#heading
-2023/07/01 18:25:42 lexText
-2023/07/01 18:25:42 lexOpenLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":2,"width":0,"item":"ItemOpenLink:\"[[\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":10,"width":1,"item":"ItemIdent:\"#heading\""}
-    lexer_test.go:100: expected Type ItemHeading, received ItemIdent
-    lexer_test.go:105: expected Value "#", received "#heading"
-2023/07/01 18:25:42 lexCloseLink
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":12,"width":1,"item":"ItemCloseLink:\"]]\""}
-    lexer_test.go:100: expected Type ItemIdent, received ItemCloseLink
-    lexer_test.go:105: expected Value "heading", received "]]"
-2023/07/01 18:25:42 lexText
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":12,"width":0,"item":"ItemText:\"\""}
-    lexer_test.go:100: expected Type ItemCloseLink, received ItemText
-    lexer_test.go:105: expected Value "]]", received ""
-=== RUN   Test_Lexer/wikilink#heading
-2023/07/01 18:25:42 lexText
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":37,"width":0,"item":"ItemText:\"\""}
-2023/07/01 18:25:42 lexText
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":28,"width":0,"item":"ItemText:\"\""}
-2023/07/01 18:25:42 lexText
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":19,"width":0,"item":"ItemText:\"\""}
-2023/07/01 18:25:42 lexText
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":12,"width":0,"item":"ItemText:\"\""}
-2023/07/01 18:25:42 lexText
-2023/07/01 18:25:42 lexOpenLink
-2023/07/01 18:25:42 lexText
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":2,"width":0,"item":"ItemOpenLink:\"[[\""}
-2023/07/01 18:25:42 lexIdent
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":10,"width":1,"item":"ItemIdent:\"wikilink\""}
-==================
-WARNING: DATA RACE
-Read at 0x00c0000822b0 by goroutine 21:
-  code.ndumas.com/ndumas/wikilink-parser.lexText()
-      /home/ndumas/work/wikilink-parser/states.go:82 +0x69
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).run()
-      /home/ndumas/work/wikilink-parser/lexer.go:149 +0x3a
-  code.ndumas.com/ndumas/wikilink-parser.Lex.func1()
-      /home/ndumas/work/wikilink-parser/lexer.go:45 +0x39
-
-Previous write at 0x00c0000822b0 by goroutine 20:
-  code.ndumas.com/ndumas/wikilink-parser.lexOpenLink()
-      /home/ndumas/work/wikilink-parser/states.go:96 +0x86
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).NextItem()
-      /home/ndumas/work/wikilink-parser/lexer.go:64 +0xd5
-  code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer.func1()
-      /home/ndumas/work/wikilink-parser/lexer_test.go:98 +0x18c
-  testing.tRunner()
-      /usr/lib/golang/src/testing/testing.go:1446 +0x216
-  testing.(*T).Run.func1()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x47
-
-Goroutine 21 (running) created at:
-  code.ndumas.com/ndumas/wikilink-parser.Lex()
-      /home/ndumas/work/wikilink-parser/lexer.go:45 +0x41a
-  code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer.func1()
-      /home/ndumas/work/wikilink-parser/lexer_test.go:95 +0x69
-  testing.tRunner()
-      /usr/lib/golang/src/testing/testing.go:1446 +0x216
-  testing.(*T).Run.func1()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x47
-
-Goroutine 20 (running) created at:
-  testing.(*T).Run()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x75d
-  code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer()
-      /home/ndumas/work/wikilink-parser/lexer_test.go:93 +0x1086
-  testing.tRunner()
-      /usr/lib/golang/src/testing/testing.go:1446 +0x216
-  testing.(*T).Run.func1()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x47
-==================
-==================
-WARNING: DATA RACE
-Write at 0x00c0000822b8 by goroutine 21:
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).next()
-      /home/ndumas/work/wikilink-parser/lexer.go:142 +0xe8
-  code.ndumas.com/ndumas/wikilink-parser.lexText()
-      /home/ndumas/work/wikilink-parser/states.go:85 +0xc4
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).run()
-      /home/ndumas/work/wikilink-parser/lexer.go:149 +0x3a
-  code.ndumas.com/ndumas/wikilink-parser.Lex.func1()
-      /home/ndumas/work/wikilink-parser/lexer.go:45 +0x39
-
-Previous write at 0x00c0000822b8 by goroutine 20:
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).next()
-      /home/ndumas/work/wikilink-parser/lexer.go:142 +0xe8
-  code.ndumas.com/ndumas/wikilink-parser.lexIdent()
-      /home/ndumas/work/wikilink-parser/states.go:31 +0x64
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).NextItem()
-      /home/ndumas/work/wikilink-parser/lexer.go:64 +0xd5
-  code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer.func1()
-      /home/ndumas/work/wikilink-parser/lexer_test.go:98 +0x18c
-  testing.tRunner()
-      /usr/lib/golang/src/testing/testing.go:1446 +0x216
-  testing.(*T).Run.func1()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x47
-
-Goroutine 21 (running) created at:
-  code.ndumas.com/ndumas/wikilink-parser.Lex()
-      /home/ndumas/work/wikilink-parser/lexer.go:45 +0x41a
-  code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer.func1()
-      /home/ndumas/work/wikilink-parser/lexer_test.go:95 +0x69
-  testing.tRunner()
-      /usr/lib/golang/src/testing/testing.go:1446 +0x216
-  testing.(*T).Run.func1()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x47
-
-Goroutine 20 (running) created at:
-  testing.(*T).Run()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x75d
-  code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer()
-      /home/ndumas/work/wikilink-parser/lexer_test.go:93 +0x1086
-  testing.tRunner()
-      /usr/lib/golang/src/testing/testing.go:1446 +0x216
-  testing.(*T).Run.func1()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x47
-==================
-==================
-WARNING: DATA RACE
-Read at 0x00c0000822a8 by goroutine 21:
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).emit()
-      /home/ndumas/work/wikilink-parser/lexer.go:109 +0x64
-  code.ndumas.com/ndumas/wikilink-parser.lexText()
-      /home/ndumas/work/wikilink-parser/states.go:88 +0xf4
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).run()
-      /home/ndumas/work/wikilink-parser/lexer.go:149 +0x3a
-  code.ndumas.com/ndumas/wikilink-parser.Lex.func1()
-      /home/ndumas/work/wikilink-parser/lexer.go:45 +0x39
-
-Previous write at 0x00c0000822a8 by goroutine 20:
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).emit()
-      /home/ndumas/work/wikilink-parser/lexer.go:119 +0x4cf
-  code.ndumas.com/ndumas/wikilink-parser.lexOpenLink()
-      /home/ndumas/work/wikilink-parser/states.go:97 +0xa4
-  code.ndumas.com/ndumas/wikilink-parser.(*Lexer).NextItem()
-      /home/ndumas/work/wikilink-parser/lexer.go:64 +0xd5
-  code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer.func1()
-      /home/ndumas/work/wikilink-parser/lexer_test.go:98 +0x18c
-  testing.tRunner()
-      /usr/lib/golang/src/testing/testing.go:1446 +0x216
-  testing.(*T).Run.func1()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x47
-
-Goroutine 21 (running) created at:
-  code.ndumas.com/ndumas/wikilink-parser.Lex()
-      /home/ndumas/work/wikilink-parser/lexer.go:45 +0x41a
-  code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer.func1()
-      /home/ndumas/work/wikilink-parser/lexer_test.go:95 +0x69
-  testing.tRunner()
-      /usr/lib/golang/src/testing/testing.go:1446 +0x216
-  testing.(*T).Run.func1()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x47
-
-Goroutine 20 (running) created at:
-  testing.(*T).Run()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x75d
-  code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer()
-      /home/ndumas/work/wikilink-parser/lexer_test.go:93 +0x1086
-  testing.tRunner()
-      /usr/lib/golang/src/testing/testing.go:1446 +0x216
-  testing.(*T).Run.func1()
-      /usr/lib/golang/src/testing/testing.go:1493 +0x47
-==================
-2023/07/01 18:25:42 lexHeading
-{"level":"debug","logger":"lexer.emit","msg":"emitting item","pos":20,"width":0,"item":"ItemText:\"wikilink#heading]]\""}
-    testing.go:1319: race detected during execution of test
---- FAIL: Test_Lexer (0.01s)
-    --- PASS: Test_Lexer/wikilink (0.00s)
-    --- PASS: Test_Lexer/wikilink|display_name (0.00s)
-    --- PASS: Test_Lexer/wikilink|display_name|second_pipe (0.00s)
-    --- PASS: Test_Lexer/wikilink_with_numeric_alias|420|second_pipe (0.00s)
-    --- PASS: Test_Lexer/wikilink_with_spaces_in_filename (0.00s)
-    --- FAIL: Test_Lexer/#heading (0.00s)
-    --- FAIL: Test_Lexer/wikilink#heading (0.00s)
-panic: runtime error: slice bounds out of range [:21] with length 20 [recovered]
-	panic: runtime error: slice bounds out of range [:21] with length 20
-
-goroutine 34 [running]:
-testing.tRunner.func1.2({0x6e8160, 0xc0000e20a8})
-	/usr/lib/golang/src/testing/testing.go:1396 +0x372
-testing.tRunner.func1()
-	/usr/lib/golang/src/testing/testing.go:1399 +0x5f0
-panic({0x6e8160, 0xc0000e20a8})
-	/usr/lib/golang/src/runtime/panic.go:890 +0x262
-code.ndumas.com/ndumas/wikilink-parser.(*Lexer).emit(0xc000082280, 0x5)
-	/home/ndumas/work/wikilink-parser/lexer.go:109 +0x506
-code.ndumas.com/ndumas/wikilink-parser.lexHeading(0xc000082280)
-	/home/ndumas/work/wikilink-parser/states.go:58 +0xa5
-code.ndumas.com/ndumas/wikilink-parser.(*Lexer).NextItem(0xc000082280)
-	/home/ndumas/work/wikilink-parser/lexer.go:64 +0xd6
-code.ndumas.com/ndumas/wikilink-parser_test.Test_Lexer.func1(0xc000190b60)
-	/home/ndumas/work/wikilink-parser/lexer_test.go:98 +0x18d
-testing.tRunner(0xc000190b60, 0xc00019cb40)
-	/usr/lib/golang/src/testing/testing.go:1446 +0x217
-created by testing.(*T).Run
-	/usr/lib/golang/src/testing/testing.go:1493 +0x75e
-FAIL	code.ndumas.com/ndumas/wikilink-parser	0.024s
-FAIL