tests/test-gendoc.t

extdiff: drop the command alias without options example in the help text

In the dropped example, the extension would look for 'vdiff.diffargs' in the
configuration, and not finding it, would run kdiff3 without the configured
options.  That's not obvious to a new user who sees a kdiff3 configuration in
the prepackaged mergetools.rc file, and sees that kdiff3 still runs.  While it
is conceivable that the user wants a kdiff3 command that runs without the
preconfigured options, it is more likely what they want is this, which uses the
canned options:

    [alias]
    vdiff = kdiff3

    [extdiff]
    kdiff3 =

We could mention alias here, but that seems like it belongs elswhere.

#require docutils

Test document extraction

  $ HGENCODING=UTF-8
  $ export HGENCODING
  $ { echo C; ls "$TESTDIR/../i18n"/*.po | sort; } | while read PO; do
  >     LOCALE=`basename "$PO" .po`
  >     echo
  >     echo "% extracting documentation from $LOCALE"
  >     echo ".. -*- coding: utf-8 -*-" > gendoc-$LOCALE.txt
  >     echo "" >> gendoc-$LOCALE.txt
  >     LANGUAGE=$LOCALE python "$TESTDIR/../doc/gendoc.py" >> gendoc-$LOCALE.txt 2> /dev/null || exit
  > 
  >     if [ $LOCALE != C ]; then
  >         cmp -s gendoc-C.txt gendoc-$LOCALE.txt && echo '** NOTHING TRANSLATED **'
  >     fi
  > 
  >     # We call runrst without adding "--halt warning" to make it report
  >     # all errors instead of stopping on the first one.
  >     echo "checking for parse errors"
  >     python "$TESTDIR/../doc/runrst" html gendoc-$LOCALE.txt /dev/null
  > done
  
  % extracting documentation from C
  checking for parse errors
  
  % extracting documentation from da
  checking for parse errors
  
  % extracting documentation from de
  checking for parse errors
  
  % extracting documentation from el
  checking for parse errors
  
  % extracting documentation from fr
  checking for parse errors
  
  % extracting documentation from it
  checking for parse errors
  
  % extracting documentation from ja
  checking for parse errors
  
  % extracting documentation from pt_BR
  checking for parse errors
  
  % extracting documentation from ro
  checking for parse errors
  
  % extracting documentation from ru
  checking for parse errors
  
  % extracting documentation from sv
  checking for parse errors
  
  % extracting documentation from zh_CN
  checking for parse errors
  
  % extracting documentation from zh_TW
  checking for parse errors