i18n: Add translator notes about ASCII art changes display

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

diff --git a/dgit b/dgit
index 02cf97d846cd695f158245e6b3a4057dd4ab7958..af26f1906bdd95176c4626f8a9c86c88ba139419 100755 (executable)
--- a/dgit
+++ b/dgit
@@ -6192,6 +6192,10 @@ END
 
     if ($quilt_mode =~ m/baredebian/) {
        $uheadref = $quilt_upstream_commitish;
+       # TRANSLATORS: this translation must fit in the ASCII art
+       # quilt differences display.  The untranslated display
+       # says %9.9s, so with that display it must be at most 9
+       # characters.
        $uhead_whatshort = __ 'upstream';
     }
 
@@ -6218,6 +6222,12 @@ END
     progress f_
 "%s: base trees orig=%.20s o+d/p=%.20s",
               $us, $unapplied, $oldtiptree;
+    # TRANSLATORS: Try to keep this ascii-art layout right.  The 0s in
+    # %9.00009s will be ignored and are there to make the format the
+    # same length (9 characters) as the output it generates.  If you
+    # change the value 9, your translation of "upstream" must fit into
+    # the new length, and you should change the number of 0s.  Do
+    # not reduce it below 4 as HEAD has to fit too.
     progress f_
 "%s: quilt differences: src:  %s orig %s     gitignores:  %s orig %s\n".
 "%s: quilt differences: %9.00009s %s o+d/p          %9.00009s %s o+d/p",