dgit: Warn when we see what look like our options passed too late

Closes: #934807
Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/dgit b/dgit
index 962bca1a67409ff5aca00f1b5005df4cb77831a3..6f240ab0517de64ad24ff7abe29de44e8382ef5e 100755 (executable)
--- a/dgit
+++ b/dgit
@@ -6679,6 +6679,31 @@ sub build_prep ($) {
     }
 }
 
+sub maybe_warn_opt_confusion ($$$) {
+    my ($subcommand, $willrun, $optsref) = @_;
+    foreach (@$optsref) {
+       if (m/^(?: --dry-run  $
+                | --damp-run $
+                | --clean= | -w[gcnd]
+                | --(?:include|ignore)-dirty$
+                | --quilt= | --gbp$ | --dpm$ | --baredebian
+                | --split-view=
+                | --build-products-dir=
+                )/x) {
+           print STDERR f_ <<END, $&, $subcommand or die $!;
+warning: dgit option %s must be passed before %s on dgit command line
+END
+       } elsif (m/^(?: -C
+                     | --no-sign  $
+                     | -k
+                     )/x) {
+           print STDERR f_ <<END, $&, $subcommand, $willrun or die $!;
+warning: option %s should probably be passed to dgit before %s sub-command on the dgit command line, so that it is seen by dgit and not simply passed to %s
+END
+       }
+    }
+}
+
 sub changesopts_initial () {
     my @opts =@changesopts[1..$#changesopts];
 }
@@ -6852,6 +6877,7 @@ sub postbuild_mergechanges_vanilla ($) {
 
 sub cmd_build {
     build_prep_early();
+    maybe_warn_opt_confusion 'build', 'dpkg-buildpackage', \@ARGV;
     $buildproductsdir eq '..' or print STDERR +(f_ <<END, $us, $us);
 %s: warning: build-products-dir set, but not supported by dpkg-buildpackage
 %s: warning: build-products-dir will be ignored; files will go to ..
@@ -6879,6 +6905,7 @@ sub pre_gbp_build {
 
 sub cmd_gbp_build {
     build_prep_early();
+    maybe_warn_opt_confusion 'gbp-build', 'gbp buildpackage', \@ARGV;
 
     # gbp can make .origs out of thin air.  In my tests it does this
     # even for a 1.0 format package, with no origs present.  So I
@@ -7086,6 +7113,7 @@ sub binary_builder {
 
 sub cmd_sbuild {
     build_prep_early();
+    maybe_warn_opt_confusion 'sbuild', 'sbuild', \@ARGV;
     binary_builder(\@sbuild, (__ <<END), qw(-d), $isuite, @ARGV, $dscfn);
 perhaps you need to pass -A ?  (sbuild's default is to build only
 arch-specific binaries; dgit 1.4 used to override that.)
@@ -7095,6 +7123,7 @@ END
 sub pbuilder ($) {
     my ($pbuilder) = @_;
     build_prep_early();
+    maybe_warn_opt_confusion 'pbuilder', 'pbuilder', \@ARGV;
     # @ARGV is allowed to contain only things that should be passed to
     # pbuilder under debbuildopts; just massage those
     my $wantsrc = massage_dbp_args \@ARGV;