[translations] Differences between potx generated files and drupal-pot files

[Vasileios Lourdas]

Hello,

I installed a fresh Drupal 5.1, enabled all modules and the latest development 
version from potx. Using potx, I extracted the pot files for a few core 
modules. I also extracted the po templates from 
http://drupal.org/project/drupal-pot in a separate directories. After 
comparing a few files from each directory, I've found that are differences 
between those two, although there shouldn't be any. For example:

$ msgcmp --use-untranslated aggregator-module.po aggregator-module-new.po 
aggregator-module-new.po:60: this message is used but not defined...
aggregator-module.po:83: ...but this definition is similar
aggregator-module-new.po:72: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:76: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:84: this message is used but not defined...
aggregator-module.po:75: ...but this definition is similar
aggregator-module-new.po:88: this message is used but not defined...
aggregator-module.po:55: ...but this definition is similar
aggregator-module-new.po:96: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:104: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:116: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:120: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:172: this message is used but not defined...
aggregator-module.po:303: ...but this definition is similar
aggregator-module-new.po:184: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:188: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:192: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:196: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:220: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:232: this message is used but not defined...
aggregator-module.po:315: ...but this definition is similar
aggregator-module-new.po:332: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:336: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:340: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:348: this message is used but not defined in 
aggregator-module.po
aggregator-module-new.po:392: this message is used but not defined in 
aggregator-module.po
msgcmp: found 21 fatal errors

aggregator-module.po is from drupal-pot and aggregator-module-new.po is the 
one extracted from potx. Obviously, there are a lot of extra messages in the 
potx generated file. I also noticed that there is an extra general.pot file 
from drupal-pot, which probably contains strings missing from the other 
modules of drupal-pot. drupal-pot also lacks color-module.pot.

What is the rationale behind this practice? What should I do if I wanted to 
translate the UI? Should I use drupal-pot or potx?
-- 
# Vasileios Lourdas,
# Informatics Engineer, Thessaloniki (Greece)
# http://www.lourdas.name