ADDED: Provide skeleton Prolog file to add SWISH as additional IDE.

README.md

@@ -204,6 +204,14 @@ and    simplifies    running    as     an      HTTPS     server.     See
 https://github.com/triska/letswicrypt.
 
 
+## Running SWISH as additional local IDE
+
+You can run SWISH alongside your   normal  Prolog development tools. The
+cleanest way to do so is by using  `myswish.pl` and install this in your
+local Prolog library. See `myswish.pl` for details   on how to swet this
+up.
+
+
 ## Design
 
 Most of the application is realised  using client-side JavaScript, which

myswish.pl

@@ -0,0 +1,70 @@
+/*  Part of SWISH
+
+    Author:        Jan Wielemaker
+    E-mail:        [email protected]
+    WWW:           http://www.swi-prolog.org
+    Copyright (C): 2019, VU University Amsterdam
+			 CWI Amsterdam
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in
+       the documentation and/or other materials provided with the
+       distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+    POSSIBILITY OF SUCH DAMAGE.
+*/
+
+:- module(my_swish_ide,
+          [ swish/0,
+            swish/1
+          ]).
+
+/** <module> Provide swish/0 from any Prolog session
+
+This module provides swish/0 and swish/1   as  auto-loaded commands from
+any Prolog shell. This allows you to run   the  command below in a shell
+and both enjoy swish and keep your local development environment.
+
+    ?- swish.
+
+## Installation
+
+    mkdir -p ~/lib/prolog
+    cp myswish.pl ~/lib/prolog
+    edit ~/lib/prolog/myswish.pl	# fix path below
+    swipl
+    ?- make_library_index('~/lib/prolog').
+    ?- halt.
+
+And test the result by starting Prolog   in a __writable directory__ and
+run `?- swish.`. If all is right,  Prolog should report it started swish
+and your browser should be directed to the newly created swish instance.
+
+## Remarks
+
+Running swish creates a directory `data`  in the current directory where
+SWISH stores settings and your  programs.  You   can  copy  this  to new
+locations or delete it when done.
+*/
+
+% EDIT THIS PATH
+:- use_module('/usr/local/share/swish/ide').