Package: devscripts
Version: 2.11.1
Severity: wishlist
Hi folks,
in #638706 I suspected qa.debian.org from not supporting \1 style
backrefs in watch files, while uscan did support them. Giovanni helped
me see that uscan doesn't actually support them at all, I just hadn't
done the right kind of testing.
I now understand that \1 style backrefs are not supported and since perl
recommends not using them, support for them shouldn't be implemented
either (IMHO).
However, to prevent further confusion, please find below a patch to the
uscan manpage documenting this lack of support.
Gr.
Matthijs
diff --git a/scripts/uscan.1 b/scripts/uscan.1
index 1e240b7..c2b81de 100644
--- a/scripts/uscan.1
+++ b/scripts/uscan.1
@@ -246,6 +246,11 @@ this should not be a problem.
operation is used, only the '\fBg\fR', '\fBi\fR' and '\fBx\fR' flags are
available and
\fIrule\fR may not contain any expressions which have the potential to
execute code (i.e. the (?{}) and (??{}) constructs are not supported).
+
+If the '\fBs\fR' operation is used, the replacement can contain
+backreferences to expressions within parenthesis is the matching regexp,
+like `\fBs/-alpha(\\d*)/.a$1/\fR'. These backreferences must use the
+`\fB$1\fR' syntax, the `\fB\\1\fR' syntax is not supported.
.TP
\fBdversionmangle=\fIrules\fR
This is used to mangle the Debian version number of the currently
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