Fix syntax.h bug introduced by recent INLINE change.

syntax.h defined an extern inline function SYNTAX_ENTRY that was
conditionally compiled one way in some modules, and a different
way in others.  This doesn't work with extern inline functions,
which must have the same definition in all modules, because the
defining code might be shared across modules, depending on the
implementation.  Symptoms reported by Martin Rudalics in:
http://lists.gnu.org/archive/html/emacs-devel/2013-09/msg00414.html
* regex.c, syntax.c (SYNTAX_ENTRY_VIA_PROPERTY): Remove.
(SYNTAX, SYNTAX_ENTRY, SYNTAX_WITH_FLAGS): New macros,
overriding the corresponding functions in syntax.h.
* syntax.h (syntax_property_entry, syntax_property_with_flags)
(syntax_property): New inline functions.
(SYNTAX_ENTRY, SYNTAX_WITH_FLAGS, SYNTAX):
Rewrite in terms of these new functions.

4 files changed, 51 insertions, 17 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 37e04f03c85..084ae983b6f 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,21 @@
+2013-09-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Fix syntax.h bug introduced by recent INLINE change.
+        syntax.h defined an extern inline function SYNTAX_ENTRY that was
+        conditionally compiled one way in some modules, and a different
+        way in others.  This doesn't work with extern inline functions,
+        which must have the same definition in all modules, because the
+        defining code might be shared across modules, depending on the
+        implementation.  Symptoms reported by Martin Rudalics in:
+        http://lists.gnu.org/archive/html/emacs-devel/2013-09/msg00414.html
+        * regex.c, syntax.c (SYNTAX_ENTRY_VIA_PROPERTY): Remove.
+        (SYNTAX, SYNTAX_ENTRY, SYNTAX_WITH_FLAGS): New macros,
+        overriding the corresponding functions in syntax.h.
+        * syntax.h (syntax_property_entry, syntax_property_with_flags)
+        (syntax_property): New inline functions.
+        (SYNTAX_ENTRY, SYNTAX_WITH_FLAGS, SYNTAX):
+        Rewrite in terms of these new functions.
+
 2013-09-21  Eli Zaretskii  <eliz@gnu.org>
 
         * dired.c (directory_files_internal): Use multibyte_chars_in_text,
diff --git a/src/regex.c b/src/regex.c
index 1befececd22..4ab98bbf098 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -131,12 +131,12 @@
 # include "character.h"
 # include "buffer.h"
 
-/* Make syntax table lookup grant data in gl_state.  */
-# define SYNTAX_ENTRY_VIA_PROPERTY
-
 # include "syntax.h"
 # include "category.h"
 
+/* Make syntax table lookup grant data in gl_state.  */
+# define SYNTAX(c) syntax_property (c, 1)
+
 # ifdef malloc
 #  undef malloc
 # endif
diff --git a/src/syntax.c b/src/syntax.c
index 3785bf45515..e18db029309 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -29,13 +29,15 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "keymap.h"
 #include "regex.h"
 
-/* Make syntax table lookup grant data in gl_state.  */
-#define SYNTAX_ENTRY_VIA_PROPERTY
-
 #include "syntax.h"
 #include "intervals.h"
 #include "category.h"
 
+/* Make syntax table lookup grant data in gl_state.  */
+#define SYNTAX(c) syntax_property (c, 1)
+#define SYNTAX_ENTRY(c) syntax_property_entry (c, 1)
+#define SYNTAX_WITH_FLAGS(c) syntax_property_with_flags (c, 1)
+
 /* Eight single-bit flags have the following meanings:
   1. This character is the first of a two-character comment-start sequence.
   2. This character is the second of a two-character comment-start sequence.
diff --git a/src/syntax.h b/src/syntax.h
index 1350d87162b..73fbb153338 100644
--- a/src/syntax.h
+++ b/src/syntax.h
@@ -83,35 +83,49 @@ struct gl_state_s
 extern struct gl_state_s gl_state;
 
 /* Fetch the information from the entry for character C
-   in syntax table TABLE, or from globally kept data (gl_state).
+   in the current buffer's syntax table,
+   or (if VIA_PROPERTY) from globally kept data (gl_state).
    Does inheritance.  */
 
 INLINE Lisp_Object
-SYNTAX_ENTRY (int c)
+syntax_property_entry (int c, bool via_property)
 {
-#ifdef SYNTAX_ENTRY_VIA_PROPERTY
-  return (gl_state.use_global
-          ? gl_state.global_code
-          : CHAR_TABLE_REF (gl_state.current_syntax_table, c));
-#else
+  if (via_property)
+    return (gl_state.use_global
+            ? gl_state.global_code
+            : CHAR_TABLE_REF (gl_state.current_syntax_table, c));
   return CHAR_TABLE_REF (BVAR (current_buffer, syntax_table), c);
-#endif
+}
+INLINE Lisp_Object
+SYNTAX_ENTRY (int c)
+{
+  return syntax_property_entry (c, 0);
 }
 
 /* Extract the information from the entry for character C
    in the current syntax table.  */
 
 INLINE int
-SYNTAX_WITH_FLAGS (int c)
+syntax_property_with_flags (int c, bool via_property)
 {
-  Lisp_Object ent = SYNTAX_ENTRY (c);
+  Lisp_Object ent = syntax_property_entry (c, via_property);
   return CONSP (ent) ? XINT (XCAR (ent)) : Swhitespace;
 }
+INLINE int
+SYNTAX_WITH_FLAGS (int c)
+{
+  return syntax_property_with_flags (c, 0);
+}
 
 INLINE enum syntaxcode
+syntax_property (int c, bool via_property)
+{
+  return syntax_property_with_flags (c, via_property) & 0xff;
+}
+INLINE enum syntaxcode
 SYNTAX (int c)
 {
-  return SYNTAX_WITH_FLAGS (c) & 0xff;
+  return syntax_property (c, 0);
 }