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authorStefan Monnier <monnier@iro.umontreal.ca>2007-08-22 16:08:42 +0000
committerStefan Monnier <monnier@iro.umontreal.ca>2007-08-22 16:08:42 +0000
commitff1104509225439f10da8e3e187fcfe5ff78bdeb (patch)
treef5ae9aef26435b044404c9cbfeb1b3d5b20c888c
parent5aa273b0a6dd11613e96f3350d748751e1c43cf0 (diff)
(byte-compile-from-buffer): Display a big fat warning for old style backquotes.
-rw-r--r--lisp/ChangeLog3
-rw-r--r--lisp/emacs-lisp/bytecomp.el8
-rw-r--r--lispref/macros.texi2
3 files changed, 11 insertions, 2 deletions
diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index cd33d38a49..593a390b91 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,8 @@
2007-08-22 Stefan Monnier <monnier@iro.umontreal.ca>
+ * emacs-lisp/bytecomp.el (byte-compile-from-buffer): Display a big fat
+ warning if the file uses old style backquotes.
+
* emacs-lisp/bytecomp.el (byte-compile-log-file)
(byte-recompile-directory, byte-compile-file)
(byte-compile-from-buffer): Use with-current-buffer.
diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 12fab768db..5a7f96fb98 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1821,6 +1821,7 @@ With argument, insert value in current buffer after the form."
;; new in Emacs 22.1.
(read-with-symbol-positions inbuffer)
(read-symbol-positions-list nil)
+ (old-style-backquotes nil)
;; #### This is bound in b-c-close-variables.
;; (byte-compile-warnings (if (eq byte-compile-warnings t)
;; byte-compile-warning-types
@@ -1865,7 +1866,12 @@ With argument, insert value in current buffer after the form."
;; Make warnings about unresolved functions
;; give the end of the file as their position.
(setq byte-compile-last-position (point-max))
- (byte-compile-warn-about-unresolved-functions))
+ (byte-compile-warn-about-unresolved-functions)
+ ;; Warn about the use of old-style backquotes.
+ (when old-style-backquotes
+ (byte-compile-warn "!! The file uses old-style backquotes !!
+This functionality has been obsolete for more than 10 years already
+and will be removed soon. See (elisp)Backquote in the manual.")))
;; Fix up the header at the front of the output
;; if the buffer contains multibyte characters.
(and filename (byte-compile-fix-header filename inbuffer outbuffer))))
diff --git a/lispref/macros.texi b/lispref/macros.texi
index 6dea53ac98..b62c8b99d7 100644
--- a/lispref/macros.texi
+++ b/lispref/macros.texi
@@ -365,7 +365,7 @@ whitespace between the @samp{`}, @samp{,} or @samp{,@@} and the
following expression.
This syntax is still accepted, for compatibility with old Emacs
-versions, but we recommend not using it in new programs.
+versions, but support for it will soon disappear.
@node Problems with Macros
@section Common Problems Using Macros