Remove trailing white space with:

 for f in *.{h,c}; do sed -i .sed 's/[[:blank:]]*$//' $f; done
(Thanks to Nicolás Wolovick)

1 files changed, 3 insertions, 3 deletions

diff --git a/grep.c b/grep.c
index 28ff11a..adc4835 100644
--- a/grep.c
+++ b/grep.c
@@ -12,7 +12,7 @@ grep(char *pattern, int fd)
 {
   int n, m;
   char *p, *q;
-  
+
   m = 0;
   while((n = read(fd, buf+m, sizeof(buf)-m-1)) > 0){
     m += n;
@@ -40,13 +40,13 @@ main(int argc, char *argv[])
 {
   int fd, i;
   char *pattern;
-  
+
   if(argc <= 1){
     printf(2, "usage: grep pattern [file ...]\n");
     exit();
   }
   pattern = argv[1];
-  
+
   if(argc <= 2){
     grep(pattern, 0);
     exit();