syntax: add ` `` ``` ````

core/bootstrap/syntax.factor

@@ -12,6 +12,7 @@ IN: bootstrap.syntax
         ":"
         ";"
         "--"
+        "`" "``" "```" "````"
         "![[" "![=[" "![==["
         "[[" "[=[" "[==["
         "factor[[" "factor[=[" "factor[==["

core/syntax/syntax.factor

@@ -87,6 +87,23 @@ IN: bootstrap.syntax
         "]==]" parse-multiline-string suffix!
     ] define-core-syntax
 
+
+    "`" [
+        scan-token suffix!
+    ] define-core-syntax
+
+    "``" [
+        "``" parse-multiline-string suffix!
+    ] define-core-syntax
+
+    "```" [
+        "```" parse-multiline-string suffix!
+    ] define-core-syntax
+
+    "````" [
+        "````" parse-multiline-string suffix!
+    ] define-core-syntax
+
     ! Different from parse-multiline-string
     "factor\"" [
         lexer get skip-blank parse-string suffix!
@@ -427,4 +444,5 @@ IN: bootstrap.syntax
         [ subwords [ changed-definition ] each ]
         [ parse-definition { } like set-specializer ] tri
     ] define-core-syntax
+
 ] with-compilation-unit

language/backticks/backticks-docs.factor

@@ -1,12 +1,12 @@
 USING: help.markup help.syntax io.encodings.utf8 strings ;
 IN: backticks
 
-HELP: `
-{ $syntax "` command [args]`" }
+HELP: \ shell``
+{ $syntax "shell`` command [args]``" }
 { $description "Runs the specified command and captures the output as a " { $link utf8 } " encoded " { $link string } "." }
 { $examples
     { $unchecked-example
-        "` ls -l`"
+        "shell`` ls -l``"
         "total 45\ndrwxrwxr-x+ 61 root  admin  2074 Apr  8 22:58 Applic..."
     }
 } ;

language/backticks/backticks.factor

@@ -4,8 +4,8 @@ USING: fry io io.encodings.utf8 interpolate io.launcher
 multiline sequences ;
 IN: backticks
 
-SYNTAX: \ `
-    "`" parse-multiline-string '[
+SYNTAX: \ shell``
+    "``" parse-multiline-string '[
         _ interpolate>string
         utf8 [ contents ] with-process-reader
     ] append! ;