Drop support for Emacs < 27.1

.github/workflows/test.yml

@@ -13,9 +13,6 @@ jobs:
     strategy:
       matrix:
         emacs_version:
-          - 26.1
-          - 26.2
-          - 26.3
           - 27.1
           - 27.2
           - 28.1

README.md

@@ -39,13 +39,10 @@ LSP support is provided using `eglot`.
 Use the latest released Emacs version available to you. The author
 typically uses the latest stable version.
 
-The config should run on Emacs 26.1 or greater and is designed to
-degrade smoothly - see the CI build - but even basic enhancements
-like completion may be unavailable if your Emacs is too old.
-
-Some Windows users might need to follow
-[these instructions](http://xn--9dbdkw.se/diary/how_to_enable_GnuTLS_for_Emacs_24_on_Windows/index.en.html)
-to get TLS (ie. SSL) support included in their Emacs.
+The config should run on Emacs 27.1 or greater and is designed to
+degrade smoothly - see the CI build - but many enhancements may be
+unavailable if your Emacs is too old, and in general you should try
+to use the latest stable Emacs release like I do.
 
 ## Other requirements
 

init.el

@@ -9,10 +9,10 @@
 ;; Produce backtraces when errors occur: can be helpful to diagnose startup issues
 ;;(setq debug-on-error t)
 
-(let ((minver "26.1"))
+(let ((minver "27.1"))
   (when (version< emacs-version minver)
     (error "Your Emacs is too old -- this config requires v%s or higher" minver)))
-(when (version< emacs-version "27.1")
+(when (version< emacs-version "28.1")
   (message "Your Emacs is old, and some functionality in this config will be disabled. Please upgrade if possible."))
 
 (add-to-list 'load-path (expand-file-name "lisp" user-emacs-directory))