Add notes.mbx file in old-extension directory.

2 files changed, 90 insertions, 0 deletions

diff --git a/old-extension/ChangeLog b/old-extension/ChangeLog
index b50a27bb..713aa7fe 100644
--- a/old-extension/ChangeLog
+++ b/old-extension/ChangeLog
@@ -1,3 +1,7 @@
+2020-10-09         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* notes.mbx: New file.
+
 2020-04-14         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* 5.1.0: Release tar ball made.
diff --git a/old-extension/notes.mbx b/old-extension/notes.mbx
new file mode 100644
index 00000000..a5b670a9
--- /dev/null
+++ b/old-extension/notes.mbx
@@ -0,0 +1,86 @@
+From j.eh@mchsi.com  Fri Apr 27 12:23:51 2012
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+	Fri, 27 Apr 2012 03:57:07 -0500
+Date: Fri, 27 Apr 2012 03:57:07 -0500
+From: John Haque <j.eh@mchsi.com>
+To: Aharon Robbins <arnold@skeeve.com>
+Cc: gawk-devel@gnu.org
+Subject: Re: [gawk-devel] changes pushed
+Message-ID: <20120427085707.GA2461@xseries232.localdomain>
+References: <201204270712.q3R7CjTc020785@skeeve.com>
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+In-Reply-To: <201204270712.q3R7CjTc020785@skeeve.com>
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+Status: RO
+
+Hi Arnold,
+
+On Fri, Apr 27, 2012 at 10:12:45AM +0300, Aharon Robbins wrote:
+> Cleanups added, infrastructure updated.  gawk_mpfr and gawk-4.0-stable
+> with latest infrastructure merged into master.
+> 
+> John - we can delete the gawk_mpfr branch from the git repo - please do so.
+
+Will do.
+
+I started a new branch array-iface to fix/improve some issues with
+the array interface. It has currently the following commits:
+
+	New array extension.	
+	Add optional shutdown routine for an extension lib.
+	Improve array interface.
+	Polish array handling code.
+	Use unref when freeing a null array element.
+
+Thr new array extension shows how to override default array
+behavior, for example, to do deferred loading at run-time when
+an array or array element is referred to. I was going to "improve"
+slighly the similar mechanism available for scalars (update_FOO/set_FOO).
+If any extension adds large number of variables into  the symbol
+table but at a given moment the user only uses a few of them, this
+could have saved a lot of unnecessary work. But, I don't know
+if an extension can or should use these facilities with the new API.
+
+I was also considering adding an example extension for persistent
+arrays but ...
+
+The unrelated change 'shutdown routine for extension' makes
+gawk to run those when exiting normally or abnormally(fatal error). 
+
+Please take a look at what I have there. I may have to rebase
+this branch and I think I can remove anything not suitable
+for inclusion.
+
+Thanks,
+
+John
+