1 # Sed script that inserts the file called HEADER before the header entry. 2 # 3 # At each occurrence of a line starting with "msgid ", we execute the following 4 # commands. At the first occurrence, insert the file. At the following 5 # occurrences, do nothing. The distinction between the first and the following 6 # occurrences is achieved by looking at the hold space. 7 /^msgid /{ 8 x 9 # Test if the hold space is empty. 10 s/m/m/ 11 ta 12 # Yes it was empty. First occurrence. Read the file. 13 r HEADER 14 # Output the file's contents by reading the next line. But don't lose the 15 # current line while doing this. 16 g 17 N 18 bb 19 :a 20 # The hold space was nonempty. Following occurrences. Do nothing. 21 x 22 :b 23 } 24
