Doc: CG: add warning about regtests not noticing ghostscript.

diff --git a/Documentation/contributor/release-work.itexi b/Documentation/contributor/release-work.itexi
index 67ab80db07befa2640b08019010f62330c143637..ad52f87daf5b033c7b5c4de5574a9753de32a7d4 100644 (file)
--- a/Documentation/contributor/release-work.itexi
+++ b/Documentation/contributor/release-work.itexi
@@ -125,6 +125,10 @@ make LILYPOND_BRANCH=stable/2.12 lilypond
 @item Check the regtest comparison in @file{uploads/webtest/} for
 any unintentional breakage.
 
+Note that this test uses the bounding boxes inside lilypond.
+Errors in ghostscript don't generate differences inside lilypond,
+so they are not registered in the regtest comparison.
+
 @item If any work was done on GUB since the last release, upload
 binaries to a temporary location, ask for feedback, and wait a day
 or two in case there's any major problems.