Update definition of Nil in undef remapping

TimToady · TimToady · commit f87df17854d8 · 2012-02-24T11:14:49.000-08:00
diff --git a/STD.pm6 b/STD.pm6
@@ -3115,7 +3115,7 @@ grammar P6 is STD {
         [ <?before [ '(' || \h*<sigil><twigil>?\w ] >
             <.obs('undef as a verb', 'undefine function or assignment of Nil')>
         ]?
-        <.obs('undef as a value', "something more specific:\n\tMu (the \"most undefined\" type object),\n\tan undefined type object such as Int,\n\tNil as an empty list,\n\t:!defined as a matcher,\n\tAny:U as a type constraint\n\tor fail() as a failure return\n\t   ")>
+        <.obs('undef as a value', "something more specific:\n\tMu (the \"most undefined\" type object),\n\tan undefined type object such as Int,\n\t:!defined as a matcher,\n\tAny:U as a type constraint,\n\tNil as the absense of a value\n\tor fail() as a failure return\n\t   ")>
     }
 
     token term:sym<proceed>

Original file line number	Diff line number	Diff line change
`@@ -3115,7 +3115,7 @@ grammar P6 is STD {`
`3115`	`3115`	`[ <?before [ '(' \|\| \h*<sigil><twigil>?\w ] >`
`3116`	`3116`	`<.obs('undef as a verb', 'undefine function or assignment of Nil')>`
`3117`	`3117`	`]?`
`3118`		`- <.obs('undef as a value', "something more specific:\n\tMu (the \"most undefined\" type object),\n\tan undefined type object such as Int,\n\tNil as an empty list,\n\t:!defined as a matcher,\n\tAny:U as a type constraint\n\tor fail() as a failure return\n\t ")>`
	`3118`	`+ <.obs('undef as a value', "something more specific:\n\tMu (the \"most undefined\" type object),\n\tan undefined type object such as Int,\n\t:!defined as a matcher,\n\tAny:U as a type constraint,\n\tNil as the absense of a value\n\tor fail() as a failure return\n\t ")>`
`3119`	`3119`	`}`
`3120`	`3120`
`3121`	`3121`	`token term:sym<proceed>`