fix typos, improve formatting

include/sane/sanei.h

@@ -59,14 +59,15 @@
  * Please use the SANEI functions wherever possible.
  *
  * This documentation was created by the use of doxygen, the 
- * doc/doxygen-sanei.conf configuration file and dcoumentation in the sanei_*.h
+ * doc/doxygen-sanei.conf configuration file and documentation in the sanei_*.h
  * files.
  *
- * This documenation is far from complete. Any help is appreciated.
+ * This documentation is far from complete. Any help is appreciated.
  *
  * @section additional Additional documentation
  * - The SANE standard can be found at <a 
- *   href="http://www.sane-project.org/html/">the SANE webserver</a>.
+ *   href="http://www.sane-project.org/html/">the SANE webserver</a>,
+ *   though the PostScript version produced from the source may be more recent.
  * - Information on how to write a backend: <a
  *   href="../backend-writing.txt">backend-writing.txt</a>.
  * - General SANE documentation is on <a

include/sane/sanei_config.h

@@ -144,9 +144,6 @@ typedef struct
 
 } SANEI_Config;
 
-/** attach with configuration callback function type. */
-typedef SANE_Status (*config_attach)(SANEI_Config *config, const char *devname);
-
 /** Parse configuration file, reading configuration options and trying to
  * attach devices found in file.
  *
@@ -155,13 +152,16 @@ typedef SANE_Status (*config_attach)(SANEI_Config *config, const char *devname);
  * with the name found and the configuration structure with it's current values.
  *
  * @param config_file name of the configuration file to read
- * @param config configuration structure to be filled during configuration parsing
- *  	  and passed to the attach callback function
+ * @param config configuration structure to be filled during configuration
+ *  	  parsing and passed to the attach callback function
  * @param config_attach attach with config callback function
  *
  * @return SANE_STATUS_GOOD if no errors
  *         SANE_STATUS_ACCESS_DENIED if configuration file can't be opened
  */
-extern SANE_Status sanei_configure_attach (const char *config_file,SANEI_Config *config,
-					   config_attach);
+extern SANE_Status sanei_configure_attach (
+  const char *config_file,
+  SANEI_Config *config,
+  SANE_Status (*config_attach)(SANEI_Config *config, const char *devname)
+);
 #endif	/* sanei_config_h */