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[Octave-bug-tracker] [bug #54887] builtin does not work for m files

From: Ceral Paquet
Subject: [Octave-bug-tracker] [bug #54887] builtin does not work for m files
Date: Tue, 23 Oct 2018 12:08:54 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0


                 Summary: builtin does not work for m files
                 Project: GNU Octave
            Submitted by: octavebugs
            Submitted on: Tue 23 Oct 2018 04:08:52 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.4.1
        Operating System: GNU/Linux



While writing wrappers to workaround the missing 'like' keyword (bug #50854
hint hint!), I noticed that the builtin function does not work properly when
used with an m-file.

To give a simple example, take the version.m function.

1. Edit version.m.
2. Insert a line disp('LOCAL')
3. Save in the current directory.
4. Execute the following:
>> version
ans = 4.4.1
>> builtin('version')
ans = 4.4.1

The last command should call the original version.m in 


instead of my local copy in /home/ceral/octave/

The same kind of wrapper when used with the zeros command works properly (i.e.
builtin calls the compiled zeros function rather than my zeros.m wrapper).


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