new example: naming quotes

FossilOrigin-Name: b7cb708ed7e5c798fddf0c30e9ac2eaf7f2951a958b17599e62e81c20987d9d5

RELEASE_NOTES.md

@@ -1,5 +1,9 @@
 # RETRO 12.2019.6
 
+This is the changelog for the development builds of Retro.
+I am currently planning to have the next release occur in
+June 2019.
+
 ## Bug Fixes
 
 ## Build
@@ -70,11 +74,13 @@
 - retro-extend: allow multiple files
 - retro-extend: reduce memory usage
 - retro-extend: fix potential buffer overrun
+- muri: remove the unused `c` directive
 
 ## Other
 
 ## Documentation
 
+- add a collection of papers
 - refactor glossary tool
 - add HTML version of the Glossary
 - add more concise text copies of the Glossary
@@ -88,6 +94,7 @@
 - add HTML.forth
 - add KeyValueStore.forth
 - add Marker.forth
+- add Naming_Quotes.forth
 - add net_fetch.forth
 - add paste.forth
 - add Paste_to_Sprunge.forth

example/Naming_Quotes.forth

@@ -0,0 +1,38 @@
+# Naming Quotes
+
+Anonymous functions called quotes are used heavily by Retro.
+This shows a way to attach names to them.
+
+In a classic Forth, words are created using `:`, which is
+one of numerous parsing words. So a named function looks
+like:
+
+    : foo ... ;
+
+In Retro, there are no parsing words. There is a prefix
+handler `:`, yielding:
+
+    :foo ... ;
+
+Quotes start with `[` and end with `]`. So they look like:
+
+    [ ... ]
+
+If we want to name a quote, we need to:
+
+- create a header
+- assign the xt field to the quote address
+- set the class handler
+
+This word, `def`, does these.
+
+~~~
+:def (as-)  d:create  d:last d:xt store  &class:word reclass ;
+~~~
+
+An example of using this:
+
+```
+[ 'Hello_%s!\n s:format s:put ]  'hello def
+'#forth hello
+```