Re: [Help-bash] Extending lengaje

[Greg Wooledge]

On Mon, Aug 20, 2018 at 08:42:04PM -0700, Azael Reyes wrote:
> I'm experimenting with the code of bash to extend the input lenguaje(don't
> going to obfuscate with detail because is a experiment), I found the
> 'parse.y' file but I think need the lexical file, I'm expecting found some
> file like 'lex.l' or something similar, but there is not somethink like
> that.

Bash doesn't use lex/flex during its build process.  It only uses bison
(yacc alternative), in this part of the Makefile:

y.tab.c: parse.y
#       -if test -f y.tab.h; then mv -f y.tab.h old-y.tab.h; fi
        $(YACC) -d $(srcdir)/parse.y
        touch parser-built
#       -if cmp -s old-y.tab.h y.tab.h; then mv old-y.tab.h y.tab.h; else cp -p 
y.tab.h ${GRAM_H}; fi

y.tab.h: y.tab.c
        @true

Whatever you're looking for, it's in the parse.y file or it doesn't exist
at all.  I suggest paying close attention to every part where the word
"token" appears.