diff --git a/src/proto/gui_photon.pro b/src/proto/gui_photon.pro
index bd5f43e..6a3ff04 100644
--- a/src/proto/gui_photon.pro
+++ b/src/proto/gui_photon.pro
@@ -1,67 +1,67 @@
 /* gui_photon.c */
-extern void gui_ph_encoding_changed __ARGS((int new_encoding));
-extern void gui_mch_prepare __ARGS((int *argc, char **argv));
-extern int gui_mch_init __ARGS((void));
-extern int gui_mch_init_check __ARGS((void));
-extern int gui_mch_open __ARGS((void));
-extern void gui_mch_exit __ARGS((int rc));
-extern void gui_mch_update __ARGS((void));
-extern int gui_mch_wait_for_chars __ARGS((int wtime));
-extern char_u *gui_mch_browse __ARGS((int saving, char_u *title, char_u *default_name, char_u *ext, char_u *initdir, char_u *filter));
-extern int gui_mch_dialog __ARGS((int type, char_u *title, char_u *message, char_u *buttons, int default_button, char_u *textfield));
-extern int gui_mch_get_winpos __ARGS((int *x, int *y));
-extern void gui_mch_set_winpos __ARGS((int x, int y));
-extern void gui_mch_set_shellsize __ARGS((int width, int height, int min_width, int min_height, int base_width, int base_height, int direction));
-extern void gui_mch_get_screen_dimensions __ARGS((int *screen_w, int *screen_h));
-extern void gui_mch_iconify __ARGS((void));
-extern void gui_mch_set_foreground __ARGS((void));
-extern void gui_mch_settitle __ARGS((char_u *title, char_u *icon));
-extern void gui_mch_set_scrollbar_thumb __ARGS((scrollbar_T *sb, int val, int size, int max));
-extern void gui_mch_set_scrollbar_pos __ARGS((scrollbar_T *sb, int x, int y, int w, int h));
-extern void gui_mch_create_scrollbar __ARGS((scrollbar_T *sb, int orient));
-extern void gui_mch_enable_scrollbar __ARGS((scrollbar_T *sb, int flag));
-extern void gui_mch_destroy_scrollbar __ARGS((scrollbar_T *sb));
-extern void mch_set_mouse_shape __ARGS((int shape));
-extern void gui_mch_mousehide __ARGS((int hide));
-extern void gui_mch_getmouse __ARGS((int *x, int *y));
-extern void gui_mch_setmouse __ARGS((int x, int y));
-extern long_u gui_mch_get_rgb __ARGS((guicolor_T pixel));
-extern void gui_mch_new_colors __ARGS((void));
-extern guicolor_T gui_mch_get_color __ARGS((char_u *name));
-extern void gui_mch_set_fg_color __ARGS((guicolor_T color));
-extern void gui_mch_set_bg_color __ARGS((guicolor_T color));
-extern void gui_mch_set_sp_color __ARGS((guicolor_T color));
-extern void gui_mch_invert_rectangle __ARGS((int row, int col, int nr, int nc));
-extern void gui_mch_clear_block __ARGS((int row1, int col1, int row2, int col2));
-extern void gui_mch_clear_all __ARGS((void));
-extern void gui_mch_delete_lines __ARGS((int row, int num_lines));
-extern void gui_mch_insert_lines __ARGS((int row, int num_lines));
-extern void gui_mch_draw_string __ARGS((int row, int col, char_u *s, int len, int flags));
-extern void gui_mch_draw_hollow_cursor __ARGS((guicolor_T color));
-extern void gui_mch_draw_part_cursor __ARGS((int w, int h, guicolor_T color));
-extern void gui_mch_set_blinking __ARGS((long wait, long on, long off));
-extern void gui_mch_start_blink __ARGS((void));
-extern void gui_mch_stop_blink __ARGS((void));
-extern void gui_mch_beep __ARGS((void));
-extern void gui_mch_flash __ARGS((int msec));
-extern void gui_mch_flush __ARGS((void));
-extern void gui_mch_set_text_area_pos __ARGS((int x, int y, int w, int h));
-extern int gui_mch_haskey __ARGS((char_u *name));
-extern void gui_mch_enable_menu __ARGS((int flag));
-extern void gui_mch_set_menu_pos __ARGS((int x, int y, int w, int h));
-extern void gui_mch_add_menu __ARGS((vimmenu_T *menu, int index));
-extern void gui_mch_add_menu_item __ARGS((vimmenu_T *menu, int index));
-extern void gui_mch_destroy_menu __ARGS((vimmenu_T *menu));
-extern void gui_mch_menu_grey __ARGS((vimmenu_T *menu, int grey));
-extern void gui_mch_menu_hidden __ARGS((vimmenu_T *menu, int hidden));
-extern void gui_mch_draw_menubar __ARGS((void));
-extern void gui_mch_show_popupmenu __ARGS((vimmenu_T *menu));
-extern void gui_mch_toggle_tearoffs __ARGS((int enable));
-extern void gui_mch_show_toolbar __ARGS((int showit));
-extern int gui_mch_init_font __ARGS((char_u *vim_font_name, int fontset));
-extern int gui_mch_adjust_charheight __ARGS((void));
-extern GuiFont gui_mch_get_font __ARGS((char_u *vim_font_name, int report_error));
-extern char_u *gui_mch_get_fontname __ARGS((GuiFont font, char_u *name));
-extern void gui_mch_set_font __ARGS((GuiFont font));
-extern void gui_mch_free_font __ARGS((GuiFont font));
+void gui_ph_encoding_changed __ARGS((int new_encoding));
+void gui_mch_prepare __ARGS((int *argc, char **argv));
+int gui_mch_init __ARGS((void));
+int gui_mch_init_check __ARGS((void));
+int gui_mch_open __ARGS((void));
+void gui_mch_exit __ARGS((int rc));
+void gui_mch_update __ARGS((void));
+int gui_mch_wait_for_chars __ARGS((int wtime));
+char_u *gui_mch_browse __ARGS((int saving, char_u *title, char_u *default_name, char_u *ext, char_u *initdir, char_u *filter));
+int gui_mch_dialog __ARGS((int type, char_u *title, char_u *message, char_u *buttons, int default_button, char_u *textfield));
+int gui_mch_get_winpos __ARGS((int *x, int *y));
+void gui_mch_set_winpos __ARGS((int x, int y));
+void gui_mch_set_shellsize __ARGS((int width, int height, int min_width, int min_height, int base_width, int base_height, int direction));
+void gui_mch_get_screen_dimensions __ARGS((int *screen_w, int *screen_h));
+void gui_mch_iconify __ARGS((void));
+void gui_mch_set_foreground __ARGS((void));
+void gui_mch_settitle __ARGS((char_u *title, char_u *icon));
+void gui_mch_set_scrollbar_thumb __ARGS((scrollbar_T *sb, int val, int size, int max));
+void gui_mch_set_scrollbar_pos __ARGS((scrollbar_T *sb, int x, int y, int w, int h));
+void gui_mch_create_scrollbar __ARGS((scrollbar_T *sb, int orient));
+void gui_mch_enable_scrollbar __ARGS((scrollbar_T *sb, int flag));
+void gui_mch_destroy_scrollbar __ARGS((scrollbar_T *sb));
+void mch_set_mouse_shape __ARGS((int shape));
+void gui_mch_mousehide __ARGS((int hide));
+void gui_mch_getmouse __ARGS((int *x, int *y));
+void gui_mch_setmouse __ARGS((int x, int y));
+long_u gui_mch_get_rgb __ARGS((guicolor_T pixel));
+void gui_mch_new_colors __ARGS((void));
+guicolor_T gui_mch_get_color __ARGS((char_u *name));
+void gui_mch_set_fg_color __ARGS((guicolor_T color));
+void gui_mch_set_bg_color __ARGS((guicolor_T color));
+void gui_mch_set_sp_color __ARGS((guicolor_T color));
+void gui_mch_invert_rectangle __ARGS((int row, int col, int nr, int nc));
+void gui_mch_clear_block __ARGS((int row1, int col1, int row2, int col2));
+void gui_mch_clear_all __ARGS((void));
+void gui_mch_delete_lines __ARGS((int row, int num_lines));
+void gui_mch_insert_lines __ARGS((int row, int num_lines));
+void gui_mch_draw_string __ARGS((int row, int col, char_u *s, int len, int flags));
+void gui_mch_draw_hollow_cursor __ARGS((guicolor_T color));
+void gui_mch_draw_part_cursor __ARGS((int w, int h, guicolor_T color));
+void gui_mch_set_blinking __ARGS((long wait, long on, long off));
+void gui_mch_start_blink __ARGS((void));
+void gui_mch_stop_blink __ARGS((void));
+void gui_mch_beep __ARGS((void));
+void gui_mch_flash __ARGS((int msec));
+void gui_mch_flush __ARGS((void));
+void gui_mch_set_text_area_pos __ARGS((int x, int y, int w, int h));
+int gui_mch_haskey __ARGS((char_u *name));
+void gui_mch_enable_menu __ARGS((int flag));
+void gui_mch_set_menu_pos __ARGS((int x, int y, int w, int h));
+void gui_mch_add_menu __ARGS((vimmenu_T *menu, int index));
+void gui_mch_add_menu_item __ARGS((vimmenu_T *menu, int index));
+void gui_mch_destroy_menu __ARGS((vimmenu_T *menu));
+void gui_mch_menu_grey __ARGS((vimmenu_T *menu, int grey));
+void gui_mch_menu_hidden __ARGS((vimmenu_T *menu, int hidden));
+void gui_mch_draw_menubar __ARGS((void));
+void gui_mch_show_popupmenu __ARGS((vimmenu_T *menu));
+void gui_mch_toggle_tearoffs __ARGS((int enable));
+void gui_mch_show_toolbar __ARGS((int showit));
+int gui_mch_init_font __ARGS((char_u *vim_font_name, int fontset));
+int gui_mch_adjust_charheight __ARGS((void));
+GuiFont gui_mch_get_font __ARGS((char_u *vim_font_name, int report_error));
+char_u *gui_mch_get_fontname __ARGS((GuiFont font, char_u *name));
+void gui_mch_set_font __ARGS((GuiFont font));
+void gui_mch_free_font __ARGS((GuiFont font));
 /* vim: set ft=c : */
diff --git a/src/proto/gui_w16.pro b/src/proto/gui_w16.pro
index eebd675..0f82c5a 100644
--- a/src/proto/gui_w16.pro
+++ b/src/proto/gui_w16.pro
@@ -1,79 +1,79 @@
 /* gui_w16.c */
-extern void gui_mch_set_blinking __ARGS((long wait, long on, long off));
-extern void gui_mch_stop_blink __ARGS((void));
-extern void gui_mch_start_blink __ARGS((void));
-extern LRESULT WINAPI vim_WindowProc __ARGS((HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam));
-extern void gui_mch_new_colors __ARGS((void));
-extern void gui_mch_def_colors __ARGS((void));
-extern int gui_mch_open __ARGS((void));
-extern int gui_mch_get_winpos __ARGS((int *x, int *y));
-extern void gui_mch_set_winpos __ARGS((int x, int y));
-extern void gui_mch_set_text_area_pos __ARGS((int x, int y, int w, int h));
-extern void gui_mch_enable_scrollbar __ARGS((scrollbar_T *sb, int flag));
-extern void gui_mch_set_scrollbar_pos __ARGS((scrollbar_T *sb, int x, int y, int w, int h));
-extern void gui_mch_create_scrollbar __ARGS((scrollbar_T *sb, int orient));
-extern int gui_mch_adjust_charheight __ARGS((void));
-extern GuiFont gui_mch_get_font __ARGS((char_u *name, int giveErrorIfMissing));
-extern char_u *gui_mch_get_fontname __ARGS((GuiFont font, char_u *name));
-extern void gui_mch_free_font __ARGS((GuiFont font));
-extern guicolor_T gui_mch_get_color __ARGS((char_u *name));
-extern int gui_mch_haskey __ARGS((char_u *name));
-extern void gui_mch_beep __ARGS((void));
-extern void gui_mch_invert_rectangle __ARGS((int r, int c, int nr, int nc));
-extern void gui_mch_iconify __ARGS((void));
-extern void gui_mch_draw_hollow_cursor __ARGS((guicolor_T color));
-extern void gui_mch_draw_part_cursor __ARGS((int w, int h, guicolor_T color));
-extern void gui_mch_update __ARGS((void));
-extern int gui_mch_wait_for_chars __ARGS((int wtime));
-extern void gui_mch_clear_block __ARGS((int row1, int col1, int row2, int col2));
-extern void gui_mch_clear_all __ARGS((void));
-extern void gui_mch_enable_menu __ARGS((int flag));
-extern void gui_mch_set_menu_pos __ARGS((int x, int y, int w, int h));
-extern void gui_mch_menu_hidden __ARGS((vimmenu_T *menu, int hidden));
-extern void gui_mch_draw_menubar __ARGS((void));
-extern long_u gui_mch_get_rgb __ARGS((guicolor_T pixel));
-extern void gui_mch_activate_window __ARGS((void));
-extern void gui_mch_show_toolbar __ARGS((int showit));
-extern void gui_mch_show_tabline __ARGS((int showit));
-extern int gui_mch_showing_tabline __ARGS((void));
-extern void gui_mch_update_tabline __ARGS((void));
-extern void gui_mch_set_curtab __ARGS((int nr));
-extern void ex_simalt __ARGS((exarg_T *eap));
-extern void gui_mch_find_dialog __ARGS((exarg_T *eap));
-extern void gui_mch_replace_dialog __ARGS((exarg_T *eap));
-extern void gui_mch_mousehide __ARGS((int hide));
-extern void gui_mch_destroy_scrollbar __ARGS((scrollbar_T *sb));
-extern void gui_mch_getmouse __ARGS((int *x, int *y));
-extern void gui_mch_setmouse __ARGS((int x, int y));
-extern void gui_mch_flash __ARGS((int msec));
-extern void gui_mch_delete_lines __ARGS((int row, int num_lines));
-extern void gui_mch_insert_lines __ARGS((int row, int num_lines));
-extern void gui_mch_exit __ARGS((int rc));
-extern int gui_mch_init_font __ARGS((char_u *font_name, int fontset));
-extern int gui_mch_maximized __ARGS((void));
-extern void gui_mch_newfont __ARGS((void));
-extern void gui_mch_settitle __ARGS((char_u *title, char_u *icon));
-extern void mch_set_mouse_shape __ARGS((int shape));
-extern char_u *gui_mch_browsedir __ARGS((char_u *title, char_u *initdir));
-extern char_u *gui_mch_browse __ARGS((int saving, char_u *title, char_u *dflt, char_u *ext, char_u *initdir, char_u *filter));
-extern int get_cmd_args __ARGS((char *prog, char *cmdline, char ***argvp, char **tofree));
-extern void gui_mch_prepare __ARGS((int *argc, char **argv));
-extern int gui_mch_init __ARGS((void));
-extern void gui_mch_set_shellsize __ARGS((int width, int height, int min_width, int min_height, int base_width, int base_height, int direction));
-extern void gui_mch_set_scrollbar_thumb __ARGS((scrollbar_T *sb, long val, long size, long max));
-extern void gui_mch_set_font __ARGS((GuiFont font));
-extern void gui_mch_set_fg_color __ARGS((guicolor_T color));
-extern void gui_mch_set_bg_color __ARGS((guicolor_T color));
-extern void gui_mch_set_sp_color __ARGS((guicolor_T color));
-extern void gui_mch_draw_string __ARGS((int row, int col, char_u *text, int len, int flags));
-extern void gui_mch_flush __ARGS((void));
-extern void gui_mch_get_screen_dimensions __ARGS((int *screen_w, int *screen_h));
-extern void gui_mch_add_menu __ARGS((vimmenu_T *menu, int pos));
-extern void gui_mch_show_popupmenu __ARGS((vimmenu_T *menu));
-extern void gui_make_popup __ARGS((char_u *path_name, int mouse_pos));
-extern void gui_mch_add_menu_item __ARGS((vimmenu_T *menu, int idx));
-extern void gui_mch_destroy_menu __ARGS((vimmenu_T *menu));
-extern void gui_mch_menu_grey __ARGS((vimmenu_T *menu, int grey));
-extern int gui_mch_dialog __ARGS((int type, char_u *title, char_u *message, char_u *buttons, int dfltbutton, char_u *textfield));
-extern void gui_mch_set_foreground __ARGS((void));
+void gui_mch_set_blinking __ARGS((long wait, long on, long off));
+void gui_mch_stop_blink __ARGS((void));
+void gui_mch_start_blink __ARGS((void));
+LRESULT WINAPI vim_WindowProc __ARGS((HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam));
+void gui_mch_new_colors __ARGS((void));
+void gui_mch_def_colors __ARGS((void));
+int gui_mch_open __ARGS((void));
+int gui_mch_get_winpos __ARGS((int *x, int *y));
+void gui_mch_set_winpos __ARGS((int x, int y));
+void gui_mch_set_text_area_pos __ARGS((int x, int y, int w, int h));
+void gui_mch_enable_scrollbar __ARGS((scrollbar_T *sb, int flag));
+void gui_mch_set_scrollbar_pos __ARGS((scrollbar_T *sb, int x, int y, int w, int h));
+void gui_mch_create_scrollbar __ARGS((scrollbar_T *sb, int orient));
+int gui_mch_adjust_charheight __ARGS((void));
+GuiFont gui_mch_get_font __ARGS((char_u *name, int giveErrorIfMissing));
+char_u *gui_mch_get_fontname __ARGS((GuiFont font, char_u *name));
+void gui_mch_free_font __ARGS((GuiFont font));
+guicolor_T gui_mch_get_color __ARGS((char_u *name));
+int gui_mch_haskey __ARGS((char_u *name));
+void gui_mch_beep __ARGS((void));
+void gui_mch_invert_rectangle __ARGS((int r, int c, int nr, int nc));
+void gui_mch_iconify __ARGS((void));
+void gui_mch_draw_hollow_cursor __ARGS((guicolor_T color));
+void gui_mch_draw_part_cursor __ARGS((int w, int h, guicolor_T color));
+void gui_mch_update __ARGS((void));
+int gui_mch_wait_for_chars __ARGS((int wtime));
+void gui_mch_clear_block __ARGS((int row1, int col1, int row2, int col2));
+void gui_mch_clear_all __ARGS((void));
+void gui_mch_enable_menu __ARGS((int flag));
+void gui_mch_set_menu_pos __ARGS((int x, int y, int w, int h));
+void gui_mch_menu_hidden __ARGS((vimmenu_T *menu, int hidden));
+void gui_mch_draw_menubar __ARGS((void));
+long_u gui_mch_get_rgb __ARGS((guicolor_T pixel));
+void gui_mch_activate_window __ARGS((void));
+void gui_mch_show_toolbar __ARGS((int showit));
+void gui_mch_show_tabline __ARGS((int showit));
+int gui_mch_showing_tabline __ARGS((void));
+void gui_mch_update_tabline __ARGS((void));
+void gui_mch_set_curtab __ARGS((int nr));
+void ex_simalt __ARGS((exarg_T *eap));
+void gui_mch_find_dialog __ARGS((exarg_T *eap));
+void gui_mch_replace_dialog __ARGS((exarg_T *eap));
+void gui_mch_mousehide __ARGS((int hide));
+void gui_mch_destroy_scrollbar __ARGS((scrollbar_T *sb));
+void gui_mch_getmouse __ARGS((int *x, int *y));
+void gui_mch_setmouse __ARGS((int x, int y));
+void gui_mch_flash __ARGS((int msec));
+void gui_mch_delete_lines __ARGS((int row, int num_lines));
+void gui_mch_insert_lines __ARGS((int row, int num_lines));
+void gui_mch_exit __ARGS((int rc));
+int gui_mch_init_font __ARGS((char_u *font_name, int fontset));
+int gui_mch_maximized __ARGS((void));
+void gui_mch_newfont __ARGS((void));
+void gui_mch_settitle __ARGS((char_u *title, char_u *icon));
+void mch_set_mouse_shape __ARGS((int shape));
+char_u *gui_mch_browsedir __ARGS((char_u *title, char_u *initdir));
+char_u *gui_mch_browse __ARGS((int saving, char_u *title, char_u *dflt, char_u *ext, char_u *initdir, char_u *filter));
+int get_cmd_args __ARGS((char *prog, char *cmdline, char ***argvp, char **tofree));
+void gui_mch_prepare __ARGS((int *argc, char **argv));
+int gui_mch_init __ARGS((void));
+void gui_mch_set_shellsize __ARGS((int width, int height, int min_width, int min_height, int base_width, int base_height, int direction));
+void gui_mch_set_scrollbar_thumb __ARGS((scrollbar_T *sb, long val, long size, long max));
+void gui_mch_set_font __ARGS((GuiFont font));
+void gui_mch_set_fg_color __ARGS((guicolor_T color));
+void gui_mch_set_bg_color __ARGS((guicolor_T color));
+void gui_mch_set_sp_color __ARGS((guicolor_T color));
+void gui_mch_draw_string __ARGS((int row, int col, char_u *text, int len, int flags));
+void gui_mch_flush __ARGS((void));
+void gui_mch_get_screen_dimensions __ARGS((int *screen_w, int *screen_h));
+void gui_mch_add_menu __ARGS((vimmenu_T *menu, int pos));
+void gui_mch_show_popupmenu __ARGS((vimmenu_T *menu));
+void gui_make_popup __ARGS((char_u *path_name, int mouse_pos));
+void gui_mch_add_menu_item __ARGS((vimmenu_T *menu, int idx));
+void gui_mch_destroy_menu __ARGS((vimmenu_T *menu));
+void gui_mch_menu_grey __ARGS((vimmenu_T *menu, int grey));
+int gui_mch_dialog __ARGS((int type, char_u *title, char_u *message, char_u *buttons, int dfltbutton, char_u *textfield));
+void gui_mch_set_foreground __ARGS((void));
 /* vim: set ft=c : */
diff --git a/src/proto/if_cscope.pro b/src/proto/if_cscope.pro
index aae9edf..0617d13 100644
--- a/src/proto/if_cscope.pro
+++ b/src/proto/if_cscope.pro
@@ -1,9 +1,9 @@
 /* if_cscope.c */
-extern void do_cscope __ARGS((exarg_T *eap));
-extern void do_scscope __ARGS((exarg_T *eap));
-extern void do_cstag __ARGS((exarg_T *eap));
-extern int cs_fgets __ARGS((char_u *buf, int size));
-extern void cs_free_tags __ARGS((void));
-extern void cs_print_tags __ARGS((void));
-extern int cs_connection __ARGS((int num, char_u *dbpath, char_u *ppath));
+void do_cscope __ARGS((exarg_T *eap));
+void do_scscope __ARGS((exarg_T *eap));
+void do_cstag __ARGS((exarg_T *eap));
+int cs_fgets __ARGS((char_u *buf, int size));
+void cs_free_tags __ARGS((void));
+void cs_print_tags __ARGS((void));
+int cs_connection __ARGS((int num, char_u *dbpath, char_u *ppath));
 /* vim: set ft=c : */
diff --git a/src/proto/if_perlsfio.pro b/src/proto/if_perlsfio.pro
index 14fa4cc..bb90468 100644
--- a/src/proto/if_perlsfio.pro
+++ b/src/proto/if_perlsfio.pro
@@ -1,3 +1,3 @@
 /* if_perlsfio.c */
-extern int *sfdcnewvim __ARGS((void));
+int *sfdcnewvim __ARGS((void));
 /* vim: set ft=c : */