use vars qw($bootstrapping);
BEGIN {
+ # watch out for fancy dashes. these can wind up in our @ARGV if the user is
+ # copypasting the bootstrap command from the POD displayed e.g. by perldoc
+ # on a Mac OS X terminal. since no software recognizes and handles these
+ # dashes, it's better to die loudly telling the user exactly what happened
+ # so they don't make the same mistake again rather than being the only
+ # program in the universe that works with them.
+ if(grep { /−/ } @ARGV) {
+ die <<'DEATH';
+WHOA THERE! It looks like you've got some fancy dashes in your commandline!
+These are *not* the traditional -- dashes that software recognizes. You
+probably got these by copy-pasting from the perldoc for this module as
+rendered by a UTF8-capable formatter. This most typically happens on an OS X
+terminal, but can happen elsewhere too. Please try again after replacing the
+dashes with normal minus signs.
+DEATH
+ }
if (my ($x) = grep { /^--bootstrap(?:=.*)?$/ } @ARGV) {
@ARGV = grep { !/^--bootstrap(?:=.*)?$/ } @ARGV;
$bootstrapping = 1;