Issue 3572: convert-ly should produce several backup files for each invokation

[lilypond.git] / Documentation / usage / updating.itely

diff --git a/Documentation/usage/updating.itely b/Documentation/usage/updating.itely
index a32489c39dfa5f51aa8da079a6abd8e85e4d682f..06a960ac8a866faff27da9fece4208a96d395a78 100644 (file)
--- a/Documentation/usage/updating.itely
+++ b/Documentation/usage/updating.itely
@@ -156,7 +156,13 @@ the version will reflect the last @emph{attempted} conversion.
 
 @item -e, --edit
 Apply the conversions direct to the input file, modifying it
-in-place.
+in-place.  The original file is renamed as @file{myfile.ly~}.  This
+backup file may be a hidden file on some operating systems.
+
+@item -b, --backup-numbered
+When used with the @samp{-e} option, number the backup files so that
+no previous version is overwritten.  The backup files may be hidden
+on some operating systems.
 
 @item -f, --from=@var{from-patchlevel}
 Set the version to convert from.  If this is not set, @command{convert-ly}