illumos gate

Hello,

Actual results:

openindiana:~$ uname -a
SunOS openindiana 5.11 illumos-549e0fd315 i86pc i386 i86pc illumos

openindiana:~$ yacc -V; echo "yacc returned with code: '$?'" 
yacc: Software Generation Utilities (SGU) Solaris-ELF (4.0)
command line: fatal: cannot open input file
yacc returned with code: '1'

openindiana:~$ lex -V
lex: Software Generation Utilities (SGU) Solaris-ELF (4.0)
^C
openindiana:~$ echo $?
130
openindiana:~$ 

yacc seems to expect an input file when invoked with the -V (show version) option. Thus it exits with return code 1 instead of 0 and prints a redundant error message. This breaks certain scripts (e.g. cmake) that depend on the return code to determine whether a command is working. lex on the other hand just prints the version and proceeds with reading from stdin, making it necessary to cancel it.

Expected results:

Something like this:

$ yacc -V; echo "yacc returned with code: '$?'" 
yacc - 1.9 20130304
yacc returned with code: '0'

$ lex -V; echo "Return code: '$?'" 
lex 2.5.37
Return code: '0'
$ 

I'm pretty sure, few people expect any command being invoked with a flag to show its version to actually do anything else besides just showing the version.