Implemented an option to turn off TLS support

README.md

@@ -3,6 +3,7 @@
 BFG (stands for Back/Forward/Go) is a free (absolutely), open-source, cross-platform, single-script, self-contained GUI client for a number of "small web" protocols like Gopher, Finger, Nex, Spartan and Gemini.
 
 BFG is written in under 1000 SLOC of Tcl 8.6 and depends upon Tcllib, Tk (obviously) and TclTLS.
+The TclTLS dependency can be turned off in the configuration file at the expense of losing Gemini and Gopher-over-TLS support
 
 If you found any bugs, feel free to submit an issue into this repo!
 
@@ -33,6 +34,7 @@ The following features are already (fully or partially) supported in BFG.
 * Dynamic window title based on the current URL
 * In-page text search
 * Ini-based customization of the current Ttk theme, content fonts and colors
+* Non-TLS mode for systems without TclTLS support
 
 ## Non-supported features
 
@@ -108,7 +110,7 @@ The following mouse bindings are currently supported:
 BFG ships with a `bfg.ini` file that holds your configuration values and bookmarks.
 The main configuration sections are:
 
-* `[net]`: network-related configs, currently only has "timeout" parameter
+* `[net]`: network-related configs, currently has "timeout" parameter and an optional "tls" parameter
 * `[widget]`: general UI widget appearance (ttkTheme, font (button font), entryfont, statusfont)
 * `[style.general]`: general content area appearance (textfont, monofont\*, foreground color, background color)
 * `[style.link.normal]`: normal link colors (foreground, background)
@@ -177,6 +179,11 @@ The [Scroll protocol](gemini://scrollprotocol.us.to/) is essentially advertised
 
 Due to a purely technical limitation of the Gopher protocol (or rather the Gophermap format) itself, we cannot determine if a particular Gophermap entry points to a plain Gopher or a Gopher-over-TLS resource. Hence, only the links belonging to the same host/port pair that was already opened with a `gophers://` link are displayed as `gophers://` links. Everything else needs to be adjusted manually for now. Sorry for the inconvenience.
 
+### My system (or Tclkit) doesn't have TclTLS available, can I still use BFG for plaintext protocols?
+
+Sure! Just supply `tls=off` (or `0`, or `none`) in the `[net]` section of the `bfg.ini` file.
+You'll lose the ability to browse Gemini and Gopher-over-TLS resources but other protocols will be fully functional.
+
 ## Credits
 
 Created by Luxferre in 2024, released into the public domain.