};
while (<$input>) {
+ if (m#^\s*($esc)?(\w+)\s*(?:=|\+=|\?=|:=)# ||
+ m#^\s*(?:$esc\:macro|define)\s+($esc)?(\S+)\s#) {
+ $note_varref->($2,!!$1);
+ }
if (s#^\s*$esc\:changequote\s+(\S+)\s+$##) {
$$esclitr = $1;
$set_esc->();
err "unknown directive &:$1 or bad argumnt syntax";
} elsif (s{^\s*${esc}TARGETS(?:_([0-9a-zA-Z_]+))?(?=\W)}{}) {
my $t = $1 // 'all';
- od target_varname($var_prefix, $t);
+ my $vn = target_varname($var_prefix, $t);
+ $note_varref->($vn,1);
+ od $vn;
$targets->{$t} //= [ ];
}
for (;;) {
err 'cannot $-double &-processed RHS of directive'
if $ddbl && defined $buffering_output;
unless ($nest[0][0] eq 'eval'
- ? s{^(.*?)($esc|[{}])}{}
- : s{^(.*?)($esc)}{}) { od $_; last; }
+ ? s{^(.*?)($esc|\$|[{}])}{}
+ : s{^(.*?)($esc|\$)}{}) { od $_; last; }
od $1;
if ($2 eq '{') {
od $2;
$pop_nest->('eval');
od '}';
next;
+ } elsif ($2 eq '$') {
+ od $2;
+ if (s{^\$}{}) { od $&; }
+ elsif (m{^[a-zA-Z]\w}) {
+ wrn
+ 'possibly confusing unbracketed single-char $-expansion';
+ }
+ elsif (m{^\(($esc)?([^()\$]+)\)} ||
+ m{^\{($esc)?([^{}\$]+)\}}) {
+ $note_varref->($2,!!$1);
+ }
+ next;
}
if (s{^\\$esc}{}) { od "$$esclitr" }
elsif (s{^\\\$}{}) { oud '$' }
elsif (s{^\\\s+$}{}) { }
elsif (s{^$esc}{}) { od "$$esclitr$$esclitr" }
elsif (m{^(?=$caps_re)}) { od $var_prefix }
- elsif (s{^\$([A-Za-z]\w+)}{}) { od "\$(${var_prefix}$1)" }
+ elsif (s{^\$([A-Za-z]\w+)}{}) {
+ $note_varref->($1,1);
+ od "\$(${var_prefix}$1)";
+ }
elsif (s{^([~^]?)(?=$lc_re)}{}) { od $pfxmap{$1} }
elsif (s{^_}{}) { od $var_prefix }
elsif (s{^=}{}) { od $var_prefix_name }
elsif (s{^([~^])\.}{}) { od $srcdirmap{$1} }
elsif (s{^\$\-}{}) { $ddbl=undef; }
elsif (s{^\$\+}{}) { $ddbl=1; }
- elsif (s{^\$\(}{}) { ddbl_only($&); oud "\$("; }
+ elsif (s{^\$\(}{}) {
+ ddbl_only($&); oud "\$(";
+ $note_varref->($2,!!$1) if m{^($esc)?([^()\$]+\))};
+ }
elsif (s{^\$(\d+)}{}) { ddbl_only($&); oud "\$($1)"; }
elsif (s{^\$\{}{}) {
err 'macro invocation cannot be re-$-doubled' if $ddbl;
od '${eval ${call ';
$evalcall_brackets = 1;
$push_nest->('eval',1, '&${...}');
+ $note_varref->($2,!!$1) if m{^\s*($esc)?([^,{}\$]+)};
} elsif (s{^([~^]?)(?=[ \t])}{}) {
my $prefix = $pfxmap{$1} // die "internal error ($1?)";
my $after='';
oraw "include \$(SUBDIRMK_MAKEFILES)\n";
}
+sub flmap ($) { local ($_) = @_; s{:(\d+)$}{ sprintf ":%10d", $1 }e; $_; }
+
sub print_varref_warnings () {
foreach my $vn (sort keys %varref) {
my $vv = $varref{$vn};
foreach my $amp ('', 1) {
printf STDERR " saw %s%s at %s\n",
($amp ? '&' : ''), $vn, $_
- foreach sort keys %{ $vv->{$amp} };
+ foreach
+ sort { flmap($a) cmp flmap($b) }
+ keys %{ $vv->{$amp} };
}
}
}