* lisp/progmodes/make-mode.el (makefile-fill-paragraph): Reset syntax-table

properties.

Fixes: debbugs:13179

2 files changed, 21 insertions, 10 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 356fe37fb70..f0409c69ce1 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2013-01-30  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+        * progmodes/make-mode.el (makefile-fill-paragraph): Reset syntax-table
+        properties (bug#13179).
+
 2013-01-30  Glenn Morris  <rgm@gnu.org>
 
         * mouse.el (mouse-drag-line): Avoid pushing same event onto
@@ -17,8 +22,8 @@
 
 2013-01-28  Fabián Ezequiel Gallina  <fgallina@cuca>
 
-        * progmodes/python.el (python-shell-parse-command): Find
-        python-shell-interpreter with modified environment.
+        * progmodes/python.el (python-shell-parse-command):
+        Find python-shell-interpreter with modified environment.
 
 2013-01-26  Stefan Monnier  <monnier@iro.umontreal.ca>
 
@@ -75,8 +80,8 @@
 
 2013-01-10  Fabián Ezequiel Gallina  <fgallina@cuca>
 
-        * progmodes/python.el (python-nav-end-of-statement): Fix
-        cornercase when handling multiline strings.
+        * progmodes/python.el (python-nav-end-of-statement):
+        Fix cornercase when handling multiline strings.
 
 2013-01-10  Glenn Morris  <rgm@gnu.org>
 
@@ -220,8 +225,8 @@
 
 2012-12-29  Mark Lillibridge  <mark.lillibridge@hp.com>
 
-        * mail/rmailmm.el (rmail-insert-mime-forwarded-message): Insert
-        the undecoded text of the message being forwarded.  (Bug#9521)
+        * mail/rmailmm.el (rmail-insert-mime-forwarded-message):
+        Insert the undecoded text of the message being forwarded.  (Bug#9521)
 
 2012-12-28  Michael Albinus  <michael.albinus@gmx.de>
 
@@ -231,8 +236,8 @@
 2012-12-26  Dmitry Gutov  <dgutov@yandex.ru>
 
         * progmodes/ruby-mode.el (ruby-indent-beg-re): Only allow "class",
-        "module" and "def" to have indentation before them.  Regression
-        from 109911 (see the new test).
+        "module" and "def" to have indentation before them.
+        Regression from 109911 (see the new test).
 
 2012-12-24  Dmitry Gutov  <dgutov@yandex.ru>
 
@@ -274,8 +279,8 @@
 
 2012-12-07  Eli Zaretskii  <eliz@gnu.org>
 
-        * textmodes/texinfo.el (texinfo-enable-quote-envs): Add
-        "smallexample".
+        * textmodes/texinfo.el (texinfo-enable-quote-envs):
+        Add "smallexample".
 
 2012-12-07  Le Wang  <l26wang@gmail.com>
 
diff --git a/lisp/progmodes/make-mode.el b/lisp/progmodes/make-mode.el
index 9939a54fe41..478eb592a22 100644
--- a/lisp/progmodes/make-mode.el
+++ b/lisp/progmodes/make-mode.el
@@ -1307,6 +1307,12 @@ definition and conveniently use this command."
         (save-restriction
           (narrow-to-region beginning end)
           (makefile-backslash-region (point-min) (point-max) t)
+          ;; Backslashed newlines are marked as puncutations, so when
+          ;; fill-delete-newlines turns the LF into SPC, we end up with spaces
+          ;; which back-to-indentation (called via fill-newline ->
+          ;; fill-indent-to-left-margin -> indent-line-to) thinks are real code
+          ;; (bug#13179).
+          (remove-text-properties (point-min) (point-max) '(syntax-table))
           (let ((fill-paragraph-function nil)
                 ;; Adjust fill-column to allow space for the backslash.
                 (fill-column (- fill-column 1)))