factor: allow SYNTAX: to have escaped names.

core/parser/parser.factor

@@ -108,12 +108,18 @@ ERROR: staging-violation word ;
         V{ } clone swap execute-parsing first
     ] when ;
 
-: scan-parsing-word ( -- word )
+! Allows HELP: \ { ... ; and SYNTAX: \ { ... ;
+: scan-escaped-word-string ( -- string )
     ?scan-token dup "\\" = [
-        drop scan-word
-    ] [
-        parse-word
-    ] if ;
+        drop ?scan-token
+    ] when ;
+
+: scan-escaped-word ( -- word )
+    scan-escaped-word-string parse-word ;
+
+: scan-new-escaped ( -- word )
+    scan-escaped-word-string check-word-name
+    create-word-in dup reset-generic ;
 
 ERROR: classoid-expected object ;
 

core/syntax/syntax.factor

@@ -159,7 +159,7 @@ in: bootstrap.syntax
     "@deprecated" [ last-word make-deprecated ] define-core-syntax
 
     "SYNTAX:" [
-        scan-new-word
+        scan-new-escaped
         mark-top-level-syntax
         parse-definition define-syntax
     ] define-core-syntax

libs/units/reduction/reduction.factor

@@ -55,4 +55,4 @@ ERROR: bad-storage-string string reason ;
 : n>money ( n -- string )
     3 10 { "" "K" "M" "B" "T" } reduce-magnitude ;
 
-SYNTAX: STORAGE: scan-token storage>n suffix! ;
+SYNTAX: \ STORAGE: scan-token storage>n suffix! ;

tools/help/syntax/syntax.factor

@@ -5,7 +5,7 @@ help.topics kernel math parser sequences vocabs.parser words ;
 in: help.syntax
 
 SYNTAX: HELP:
-    scan-parsing-word bootstrap-word
+    scan-escaped-word bootstrap-word
     [ >link save-location ]
     [ [ \ ; parse-until >array ] dip set-word-help ]
     bi ;