diff -u indent-2.2.11/src/args.c indent-2.2.11.my/src/args.c
--- indent-2.2.11/src/args.c	2008-07-23 23:27:17 +0400
+++ indent-2.2.11.my/src/args.c	2011-08-16 14:07:30 +0400
@@ -151,6 +151,7 @@
 static int exp_cpp  = 0;
 static int exp_cs   = 0;
 static int exp_d    = 0;
+static int exp_ddd  = 0;
 static int exp_bfda = 0;
 static int exp_bfde = 0;
 static int exp_di   = 0;
@@ -317,6 +318,8 @@
     {"fca",     PRO_BOOL,                            true,       ON, &settings.format_comments,                  &exp_fca},
     {"fc1",     PRO_BOOL,                            true,       ON, &settings.format_col1_comments,             &exp_fc1},
     {"eei",     PRO_BOOL,                           false,       ON, &settings.extra_expression_indent,          &exp_eei},
+    {"ddd",     PRO_BOOL,                            true,       ON, &settings.diff_decls_and_defs,              &exp_ddd},
+    {"nddd",    PRO_BOOL,                            true,      OFF, &settings.diff_decls_and_defs,              &exp_ddd},
     {"dj",      PRO_BOOL,                           false,       ON, &settings.ljust_decl,                       &exp_dj},
     {"di",      PRO_INT,                               16, ONOFF_NA, &settings.decl_indent,                      &exp_di},
     {"d",       PRO_INT,                                0, ONOFF_NA, &settings.unindent_displace,                &exp_d},
@@ -436,6 +439,8 @@
     {"fca",     PRO_BOOL,                           false,       ON, &settings.format_comments,                  &exp_fca},
     {"fc1",     PRO_BOOL,                           false,       ON, &settings.format_col1_comments,             &exp_fc1},
     {"eei",     PRO_BOOL,                           false,       ON, &settings.extra_expression_indent,          &exp_eei},
+    {"ddd",     PRO_BOOL,                            true,       ON, &settings.diff_decls_and_defs,              &exp_ddd},
+    {"nddd",    PRO_BOOL,                            true,      OFF, &settings.diff_decls_and_defs,              &exp_ddd},
     {"dj",      PRO_BOOL,                           false,       ON, &settings.ljust_decl,                       &exp_dj},
     {"di",      PRO_INT,                                2, ONOFF_NA, &settings.decl_indent,                      &exp_di},
     {"d",       PRO_INT,                                0, ONOFF_NA, &settings.unindent_displace,                &exp_d},
diff -u indent-2.2.11/src/handletoken.c indent-2.2.11.my/src/handletoken.c
--- indent-2.2.11/src/handletoken.c	2009-02-15 14:20:42 +0300
+++ indent-2.2.11.my/src/handletoken.c	2011-08-16 14:18:28 +0400
@@ -1642,6 +1642,11 @@
     {
       /* what ? */
     }
+    if (parser_state_tos->in_parameter_declaration_prototype)
+    {
+      parser_state_tos->in_parameter_declaration_prototype = 0;
+      parser_state_tos->in_parameter_declaration = 0;
+    }
 }

 /**
diff -u indent-2.2.11/src/indent.h indent-2.2.11.my/src/indent.h
--- indent-2.2.11/src/indent.h	2009-10-11 23:15:34 +0400
+++ indent-2.2.11.my/src/indent.h	2011-08-16 14:19:37 +0400
@@ -318,6 +318,11 @@
     int brace_indent; /*!< number of spaces to indent braces from the surround if, while, etc. in -bl
                        * (bype_2 == 0) code */
     int expect_output_file;  /*!< Means "-o" was specified. */
+    int diff_decls_and_defs; /*!< Makes indent think that function prototypes are terminated by ';',
+                              * without this option indent will not be able to tell a difference between
+                              * int foo (); and int foo () {}
+                              * This is the default.
+                              */
 } user_options_ty;

 extern user_options_ty settings;
@@ -430,6 +435,7 @@
                                    * slightly different */
     int in_stmt;                  /*!<  set to 1 while in a stmt */
     int in_parameter_declaration;
+    int in_parameter_declaration_prototype;
     int ind_level;                /*!<  the current indentation level in spaces */
     int ind_stmt;                 /*!<  set to 1 if next line should have an extra
                                    * indentation level because we are in the
diff -u indent-2.2.11/src/lexi.c indent-2.2.11.my/src/lexi.c
--- indent-2.2.11/src/lexi.c	2009-11-11 22:36:32 +0300
+++ indent-2.2.11.my/src/lexi.c	2011-08-16 14:14:28 +0400
@@ -616,8 +616,11 @@
                * I've added '=' to this list to keep from breaking
                * a non-valid C macro from libc.  -jla */

-               if (*tp != ';' && *tp != ',' && *tp != '(' && *tp != '=')
+               if ((*tp != ';' || !settings.diff_decls_and_defs) &&
+                   *tp != ',' && *tp != '(' && *tp != '=')
                {
+                  if (*tp == ';')
+                    parser_state_tos->in_parameter_declaration_prototype = 1;
                   parser_state_tos->in_parameter_declaration = 1;
                }
             }
