[fpc-devel] fpdoc path + system.uitypes problems.

[Marco van de Voort]

(forum thread: 
https://forum.lazarus.freepascal.org/index.php/topic,65629.0.html)

Don noticed that the system.uitypes lemma's in the CHM are empty, both 
with 3.2.x as 3.3.x fpdoc.

I checked the only html snapshot and it is the same: 
https://www.freepascal.org/daily/doc/rtl/system.uitypes/index-5.html

I can remember that I tried to debug this a while back, and that this is 
a fundamental problem of fpdoc because it uses dots to separate the 
parts of a lemma. (e.g. packagename.unitname.recordtype.fieldname).  
Separating a path on dot then breaks the unit name. If unit name is 
system.uitypes.somevariable, it tries to find symbol uitypes in system, 
and then searches for a  field in somevariable  etc.

To fix this either we have to e.g. keep a list of packages and a list of 
units and then try to disambiguate to only pick the longest match. That 
maybe have risks that other corner cases be found or that the list of 
units is not yet complete at any point when this system is inside 
fpdoc.  This requires no changes to the .xmls

A more definitive choice is to change something about the notation and 
somehow replace or escape dots within identifiers. like  
rtl.#system.uitypes#.recordtype.fieldname  or like 
rtl.system#uitypes.recordtype.fieldname or 
rtl.system..uitypes.recordtype.fieldname. (exact characters to be used 
T.b.d.    Only requires changes to the XML for dotted unit names.

Opinions etc ?