21 Jan
2008
21 Jan
'08
12:29 a.m.
El Domingo, 20 de Enero de 2008, Iñaki Baz Castillo escribió:
---- local.m4 ----
define(`IP',`127.0.0.1')
define(`PORT' ,`5061')
-----------------------
---- file.txt.m4 ----
My ip is IP and my port is PORT.
--------------------------
~# m4 local.m4 file.txt.m4 > file.txt
---- file.txt ----
<-- Empty line
<-- Empty line
<-- Empty line
<-- Empty line
My ip is 127.0.0.1 and my port is 5061.
---------------------
Ops, just now I've discovered the "dnl" option and an explanation:
"Another problem with m4 is that it replaces its commands with empty lines."
So I could solve partially the problem with this:
---- local.m4 ----
define(`IP',`127.0.0.1')dnl
define(`PORT' ,`5061')dnl
-----------------------
But the problem still occurs if I want to include comments in the local.m4
file as:
---- local.m4 ----
# Server data: <-- This will add an empty line.
define(`IP',`127.0.0.1')dnl
define(`PORT' ,`5061')dnl
-----------------------
--
Iñaki Baz Castillo