[MacPorts] #57850: octave @4.4.1_2: Error message when starting Octave.app and broken online help using the doc function

[MacPorts]

#57850: octave @4.4.1_2: Error message when starting Octave.app and broken online
help using the doc function
---------------------+---------------------------------
  Reporter:  maehne  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect  |     Status:  closed
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:  fixed   |   Keywords:
      Port:  octave  |
---------------------+---------------------------------
Description changed by mf2k:

Old description:

> When launching the Octave.app GUI, a message window pops up with the
> following error message:
>
>   Could not copy help collection to temporary file. Search capabilities
> may be affected. Cannot create index tables in file
> /opt/local/share/octave/4.4.1/doc/octave_interpreter.qhc
>
> After clicking on OK, the Octave GUI opens. Octave primary functions seem
> to work without problem except for the {{{doc}}} function (which was
> hinted by the error message). Asking, e.g., for the documentation of the
> {{{deg2rad}}} function will only display two empty panes in the tab
> "Documentation" instead of the requested page from the online version of
> the manual. Related may be that the menu entry {{{Help->Documentation->On
> Disk}}} is not working as expected -- only the two empty panes from the
> Documentation tab are shown.{{{Help->Documentation->Online}}} opens the
> Octave manual from http://octave.org in a web browser.
>
> When using {{{octave}}} from a regular shell, the above error message is
> not shown and the {{{doc}}} command works as expected displaying the
> online manual in the {{{info}}} browser. I am using the {{{octave}}} port
> already for several years every couple of weeks, but I never noticed the
> error message before. Therefore, I suspect that the error got introduced
> by one of the recent updates to the port.
>
> The exact variant of the port, which is installed is:
> {{{
> $ port installed octave
> The following ports are currently installed:
>   octave
> @4.4.1_2+accelerate+app+docs+gfortran+graphicsmagick+qt5+sound+sundials
> (active)
> }}}
>
> My MacPorts installation is fully updated and runs on macOS High Sierra
> 10.13.6 on MacBook Pro 15-inch 2017.

New description:

 When launching the Octave.app GUI, a message window pops up with the
 following error message:

 {{{
   Could not copy help collection to temporary file. Search capabilities
 may be affected. Cannot create index tables in file
 /opt/local/share/octave/4.4.1/doc/octave_interpreter.qhc
 }}}

 After clicking on OK, the Octave GUI opens. Octave primary functions seem
 to work without problem except for the {{{doc}}} function (which was
 hinted by the error message). Asking, e.g., for the documentation of the
 {{{deg2rad}}} function will only display two empty panes in the tab
 "Documentation" instead of the requested page from the online version of
 the manual. Related may be that the menu entry {{{Help->Documentation->On
 Disk}}} is not working as expected -- only the two empty panes from the
 Documentation tab are shown.{{{Help->Documentation->Online}}} opens the
 Octave manual from http://octave.org in a web browser.

 When using {{{octave}}} from a regular shell, the above error message is
 not shown and the {{{doc}}} command works as expected displaying the
 online manual in the {{{info}}} browser. I am using the {{{octave}}} port
 already for several years every couple of weeks, but I never noticed the
 error message before. Therefore, I suspect that the error got introduced
 by one of the recent updates to the port.

 The exact variant of the port, which is installed is:
 {{{
 $ port installed octave
 The following ports are currently installed:
   octave
 @4.4.1_2+accelerate+app+docs+gfortran+graphicsmagick+qt5+sound+sundials
 (active)
 }}}

 My MacPorts installation is fully updated and runs on macOS High Sierra
 10.13.6 on MacBook Pro 15-inch 2017.

--

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Ticket URL: <https://trac.macports.org/ticket/57850#comment:9>
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