compat-28: Drop null-device

This API is currently unused. I first have to understand
`with-connection-local-variables' better. Maybe that macro should be
backported first. The function `null-device' always returns /dev/null
for me. What is the point of this API?

3 files changed, 6 insertions, 17 deletions

diff --git a/NEWS.org b/NEWS.org
index f5a314a..04f16b5 100644
--- a/NEWS.org
+++ b/NEWS.org
@@ -4,7 +4,8 @@
 
 - Add tests.
 - Add links from compatibility definitions to tests.
-- Drop JSON parsing support (libjansson API).
+- BREAKING: Drop JSON parsing support (libjansson API).
+- BREAKING: Drop ~null-device~.
 - compat-26: Add ~buffer-hash~.
 - compat-27: Add ~fixnump~ and ~bignump~.
 - compat-27: Add ~with-minibuffer-selected-window~.
diff --git a/compat-28.el b/compat-28.el
index eb5d297..c58c1d5 100644
--- a/compat-28.el
+++ b/compat-28.el
@@ -623,14 +623,6 @@ onwards does."
     ".#" (file-name-nondirectory filename))
    (file-name-directory filename)))
 
-;;;; Defined in files-x.el
-
-(compat-defun null-device () ;; <UNTESTED>
-  "Return the best guess for the null device."
-  (if (file-remote-p default-directory)
-      "/dev/null"
-    null-device))
-
 ;;;; Defined in minibuffer.el
 
 (compat-defun format-prompt (prompt default &rest format-args) ;; <compat-tests:format-prompt>
diff --git a/compat.texi b/compat.texi
index a92b9f0..23ec06c 100644
--- a/compat.texi
+++ b/compat.texi
@@ -1804,12 +1804,6 @@ Return a string containing a lock file name for @var{filename}, obeying
 @code{lock-file-name-transforms}.
 @end defun
 
-@c based on lisp/files.el
-@defun null-device
-Return the path to the null device (usually something like
-@file{/dev/null}) on the current system.
-@end defun
-
 @c copied from lisp/calendar/time-date.el
 @defun decoded-time-period time
 Interpret @var{time} as a period and return its length in seconds.  For
@@ -1942,6 +1936,8 @@ Additional Edebug keywords.
 @item
 Shorthand support.
 @item
+The libjansson JSON APIs, e.g., @code{json-parse-string}.
+@item
 The function @code{custom-add-choice}.
 @item
 The function @code{dom-print}.
@@ -1952,8 +1948,6 @@ The function @code{dns-query-asynchronous}.
 @item
 The function @code{get-locale-names}.
 @item
-The function @code{json-available-p}.
-@item
 The function @code{mail-header-parse-addresses-lax}.
 @item
 The function @code{mail-header-parse-address-lax}.
@@ -1970,6 +1964,8 @@ The function @code{syntax-class-to-char}.
 @item
 The function @code{path-separator}.
 @item
+The function @code{null-device}.
+@item
 Any @code{multisession} functionality.
 @end itemize