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Same awk gives different output:

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# 1  
Old 05-19-2009
Same awk gives different output:
Code:
nawk -F"|" '{for (i=1;i<=NF;i++) {gsub("^[ ]*", "",$i);gsub("[ ]*$", "",$i)}}1' OFS="|"  file  | wc -l     
1000


Code:
nawk -F"|" '{for (i=1;i<=NF;i++) {gsub("^[ ]*", "",$i);gsub("[ ]*$", "",$i);print $0}}' OFS="|"  file | wc -l 
22000


The above awk command are same but with different printing way.
Help me understand the difference.
# 2  
Old 05-19-2009
the difference is in the "1" . the second one prints inside the for loop. the first one prints for all record. break up the one liner into readable chunks if you don't understand the code.
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