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Test for EOF at beginning of file--exit gracefully #63

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2 clipper/fastq-join.cpp
@@ -156,7 +156,7 @@ int main (int argc, char **argv) {
{
for (i=0;i<in_n;++i) {
char c=getc(fin[i]);
- if (c != '@') {
+ if (c != '@' && c != EOF) {
fprintf(stderr, "%s doesn't appear to be a fastq file (%c)\n", in[i], c);
return 1;
}