[gnulib-tool-py] Dependencies contain comments and variables

[Dmitriy Selyutin]

Hi Bruno,

I've found something strange inside code where we get dependencies. The problem is that old gnulib code seems to return comments and different shell code with dependencies.

Example from strnlen:

Depends-on:
string
extensions
memchr-obsolete [test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1]

That return such list of string:
[
  'string',
  'extensions',
  'memchr-obsolete [test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1]]'

]

Also it grabs comments (example from fseeko):

extensions
largefile
lseek
stdio
sys_types
# Just to guarantee consistency between fseek() and fseeko().
fseek


As for comments we can exclude them (it is a very simple thing), but what we need to do with [test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1]] strings? Am I right that it is a conditional dependency that is added if condition in brackets is True? sed_extract_prog seems to extract it, but I can't find the code which processes such directives.