edd82b556567eda529c75a20dd73f9c27b151cbe
braney
  Fri Mar 22 10:48:38 2013 -0700
fix a problem that Hiram found where twoBitIsFile was errAborting if you gave it a directory name which is how netToAxt was calling it.
diff --git src/inc/portable.h src/inc/portable.h
index bdbfc4c..3369683 100644
--- src/inc/portable.h
+++ src/inc/portable.h
@@ -136,17 +136,19 @@
 /* Read in an unbuffered, unechoed character from keyboard. */
 
 time_t fileModTime(char *pathName);
 /* Return file last modification time.  The units of
  * these may vary from OS to OS, but you can depend on
  * later files having a larger time. */
 
 
 boolean isPipe(int fd);
 /* determine in an open file is a pipe  */
 
 boolean maybeTouchFile(char *fileName);
 /* If file exists, set its access and mod times to now.  If it doesn't exist, create it.
  * Return FALSE if we have a problem doing so. */
 
+boolean isRegularFile(char *fileName);
+/* Return TRUE if fileName is a regular file. */
 #endif /* PORTABLE_H */