Re: [bug-gawk] Inconsistent External Command Spawning

[Eli Zaretskii]

> Date: Sun, 23 Jun 2013 17:02:43 +0200
> From: Manuel Collado <address@hidden>
> CC: Eli Zaretskii <address@hidden>
> 
> I've tested the system/pipe behavior with gawk 4.1.0 from ezwinports. 
> There is something weird. system() commands are executed in cmd script 
> mode, while pipe commands are executed as top-level console input (sorry 
> for the text in spanish):
> 
> ---- system-pipe.awk ----------
> function testcommand( command,            tmp ) {
>    print "Command <" command ">"
>    print "System";
>    system(command);
>    close(command);
>    print "Pipe";
>    command | getline tmp;
>    print tmp;
>    close(command);
>    print "";
> }
> 
> BEGIN {
>    testcommand( "ECHO x%1x" )
>    testcommand( "ECHO x%TIME%x" )
>    testcommand( "for %%K in (uno) do @echo x%%Kx" )
>    testcommand( "for %K in (uno) do @echo x%Kx" )
> }
> 
> ------------------------------
> I:\pruebas\awk\gawk4>gawk -f system-pipe.awk
> Command <ECHO x%1x>
> System
> xx
> Pipe
> x%1x
> 
> Command <ECHO x%TIME%x>
> System
> x16:57:41,34x
> Pipe
> x16:57:41,37x
> 
> Command <for %%K in (uno) do @echo x%%Kx>
> System
> xunox
> Pipe
> No se esperaba %%K en este momento.
> 
> 
> Command <for %K in (uno) do @echo x%Kx>
> System
> No se esperaba Kx en este momento.
> Pipe
> xunox
> -------------------------------
> 
> With gawk 4.0.1 both system() and pipe commands are executed in cmd 
> script mode.
> 
> -------------------------------
> I:\pruebas\awk\gawk4>gawk401 -f system-pipe.awk
> Command <ECHO x%1x>
> System
> xx
> Pipe
> xx
> 
> Command <ECHO x%TIME%x>
> System
> x16:59:55,12x
> Pipe
> x16:59:55,17x
> 
> Command <for %%K in (uno) do @echo x%%Kx>
> System
> xunox
> Pipe
> xunox
> 
> Command <for %K in (uno) do @echo x%Kx>
> System
> No se esperaba Kx en este momento.
> Pipe
> No se esperaba Kx en este momento.
> --------------------------------

I uploaded a fixed binary.