On Tuesday 08 April 2008, James Simmons wrote:
> > > Index: shell/ash.c
> > > ===================================================================
> > > --- shell/ash.c (revision 21673)
> > > +++ shell/ash.c (working copy)
> > > @@ -12878,12 +12878,21 @@
> > >
> > > /* longest must be first */
> > > static const char op_tokens[] ALIGN1 = {
> > > + '-','e','q',0, TOK_EQ,
> > > + '-','n','e',0, TOK_NE,
> > > + '-','l','t',0, TOK_LT,
> > > + '-','g','t',0, TOK_GT,
> > > + '-','g','e',0, TOK_GE,
> > > + '-','l','t',0, TOK_LT,
> > > + '-','l','e',0, TOK_LE,
> > > '<','<','=',0, TOK_LSHIFT_ASSIGN,
> > > '>','>','=',0, TOK_RSHIFT_ASSIGN,
> > > '<','<', 0, TOK_LSHIFT,
> > > '>','>', 0, TOK_RSHIFT,
> > > '|','|', 0, TOK_OR,
> > > + '-','o', 0, TOK_OR,
> > > '&','&', 0, TOK_AND,
> > > + '-','a', 0, TOK_AND,
> > > '!','=', 0, TOK_NE,
> > > '<','=', 0, TOK_LE,
> > > '>','=', 0, TOK_GE,
> >
> > Can you give examples of changed behavior?
>
> Actually testing the patch now something changed from busybox 1.6.1. It no
> longer works. The problem was this. Now I don't know if this is a bashism?
>
> #!/bin/sh
>
> len=10
> i=0
>
> while [[ $((++i)) -lt len ]]; do
> echo "i = $i"
> donethe [[...]] is a bashism. in this case you can just change it to [...]. in this particular case, [...] will behave exactly the same as bash's [[...]]. the ++ operator is optional POSIX extension. -mike
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