On Jan 31, 9:53 am, "Edward K. Ream" <[email protected]> wrote:
> Thanks. That will help. No doubt the problem is the code that
> calculates the path to be created. This can get complicated,
> especially on Windows.
OMG. After an hour of tracing I have found the problem. It is this
@path statement:
@path: C:\Dokumente und Einstellungen\VR\Eigene Dateien\Tools\Leo
This specifies the following path:
: C:\Dokumente und Einstellungen\VR\Eigene Dateien\Tools\Leo
Notice the two leading characters: ':' and ' '. This is indeed an
invalid path!!
This is *so* easy to miss. Both you and I did so repeatedly.
But how is Leo supposed to deal with this hard-to-find error?
The detection of the @path directive happens in get_directives using a
regex. When the regex succeeds, we could look for unexpected
characters after the Leo directive: in this case the colon. We could
solve this problem (I think), by adding \s to the regex in
compute_directives_re. That is, change:
aList = ['^...@%s' % z for z in globalDirectiveList if z !=
'others']
to:
aList = ['^...@%s\s' % z for z in globalDirectiveList if z !=
'others']
If we do this, there is no way to give a warning about the ':'
disabling the directive.
We could give a warning if we *don't* change the regex, but that won't
work for two reasons:
1. [Livable] If we give an warning, that warning will occur many
times. There is no easy way to avoid those complications. But this
issue is moot, because...
2. [Intolerable] The warning would be given for valid Python
decorators, such as @pathx(!!). We can not allow this.
So it looks like the best solution as follows:
- I'll change the regex so that g. get_directives will *silently*
ignore anything that looks like a Leo directive but that "doesn't end
well".
- I'll change Leo's qt and tk syntax colorer so that directives must
end properly.
I think this will be an effective solution. The syntax colorer will
provide a better clue that something is amiss, and strange @path
directives will not cause confusion.
Ah, the existential pleasures of engineering :-) You gotta love this
stuff.
Edward
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