[Rd] *.Rd file: space after topic in "\alias{topic }" should be ignored (PR#9914)

From: <bill_at_insightful.com>
Date: Mon, 17 Sep 2007 19:45:17 +0200 (CEST)

Full_Name: Bill Dunlap
Version: R version 2.6.0 Under development (unstable) (2007-07-26 r42329) OS: Linux
Submission from: (NULL) (

If a *.Rd file has an \alias{topic } with a space between 'topic' and the closing '}' then the space is copied to the help/AnIndex file and help(topic) fails to find the help file.

E.g., if the help file starts with

\alias{test1 }
\alias{test3 }

then help(test1) and help(test4) work, but not help(test1) or help(test3).

A possible fix is

--- share/perl/R/Rdlists.pm     (revision 42846)
+++ share/perl/R/Rdlists.pm     (working copy)
@@ -329,7 +329,7 @@
                $main::title2file{$rdtitle} = $manfilebase;

-           while($text =~ s/\\alias\{\s*(.*)\s*\}//){
+           while($text =~ s/\\alias\{\s*([^\s]*)\s*\}//){
                $alias = $1;
                $alias =~ s/\\%/%/g;
                if ($internal){

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