On Thu, Feb 9, 2012 at 11:06 AM, Edward K. Ream <[email protected]> wrote:
> On Feb 9, 7:39 am, "Edward K. Ream" <[email protected]> wrote:
>> Leo's startup code is extremely complex.  It is becoming urgent to simplify 
>> it.
>
> There is a buglet involving the computation of the location of
> leoSettings.leo and myLeoSettings.leo that I would like to fix.
>
> Kent, and others interested in "creative" settings please take note.
>
> Supposedly, the rules for finding settings files are at:
> http://webpages.charter.net/edreamleo/customizing.html#search-order-for-settings-files
> Here they are:
>
> QQQQQ
> When reading a .leo file, Leo looks for settings in default settings
> files first, then settings in personal settings files, and finally
> settings in local settings files. The exact search order is:
>
>    Default settings files:
>        configDir/leoSettings.leo
>        homeDir/leoSettings.leo
>        localDir/leoSettings.leo
>    Personal settings files:
>        configDir/myLeoSettings.leo
>        homeDir/myLeoSettings.leo
>        homeDir/<machine-name>LeoSettings.leo (note capitalization)
>        localDir/myLeoSettings.leo
>    Local settings files:
>        The file specified by the -c command-line option.
>        The file being loaded.
> QQQQQ

Reacting according to _my_ Leo world view.

I assume the existence of configDir/leoSettings.leo, but I
would never consider configDir/myLeoSettings.leo, because
if it's 'mine', what is it doing in Leo's source tree?

Similarly, I've never considered a leoSettings.leo file outside Leo's
source tree.
So, I basically could eliminate the leoSettings/myLeoSettings
dichotomy, if it's
outside the leoConfig/ dir, it's 'mine'.

So, to meet my needs, the search order could be when opening mydir/myfile.leo:
- leoConfig/leoSettings.leo # Edward's settings
- ~/.leo/leoSettings.leo # my system-wide settings
- leoSettings.leo in mydir/ # settings specific to this 'flavor' of Leo
- a file pointed to by -c <configfile> on the command line
- @settings node in myfile.leo # this file only

In theory a /etc/leo/leoSettings.leo file would be appropriate,
doubtful in practice.

>
> This might be true for the first local file being loaded,

So, 'first' is the file on the command line, 'not first' are files
opened via menu File -> Open ... ?

I would be ok if files opened from inside a Leo instance only considered
settings contained in the file being opened.

The limitations of previous statement would be mitigated if Leo
implemented native 'sessions' or 'projects' wherein I could call
Leo with a session name, the session consisting of the names
and current nodes of a set of Leo files.

Thanks,
Kent

 but I
> *think* that what happens for all other .leo files is that the
> settings in the previously-found leoSettings.leo and myLeoSettings.leo
> files are used *without* searching again for leoSettings.leo and
> myLeoSettings.leo.
>
> So it looks like the settings in effect for a particular local file
> could depend on whether that file was loaded first or not.
>
> Imo, searching localDir for settings is a good recipe for confusion.
> Otoh, Kent may have made a (strong?) case for settings files in the
> local directory (the directory containing the .leo file being loaded,
> or rather the *first* .leo file being loaded).
>
> But it seems hard to believe that the combination of settings files in
> the home directory, plus the -c option, isn't sufficient to handle
> just about any conceivable need.  Furthermore, leoSettings.leo and
> myLeoSettings.leo will be loaded from the local directory only if they
> don't exist anywhere else.  How likely is that?  I always like to
> avoid extremely rare cases: the confusion can be extreme when they
> actually do happen.
>
> Also, it should be made absolutely clear that Leo will load
> leoSettings.leo and myLeoSettings.leo at most once.
>
> Comments welcome, Amigos.
>
> Edward
>
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