gnulib-tool.py: Fix the modules indentation in --create-testdir' output

[Bruno Haible]

In the output of test-create-testdir4, the list of modules in the output
is not correctly indented:

--- test-create-testdir-4.out   2024-03-19 17:48:35.022049580 +0100
+++ tmp2229544-out      2024-03-24 01:42:30.769446029 +0100
@@ -1,3262 +1,3342 @@
 Module list with included dependencies (indented):
-  _Exit
+    _Exit
     _Exit-tests
-  absolute-header
-  accept
+    absolute-header
+    accept
     accept-tests

This patch fixes it.


2024-03-23  Bruno Haible  <br...@clisp.org>

        gnulib-tool.py: Fix the modules indentation in --create-testdir' output.
        * pygnulib/GLTestDir.py (GLTestDir.execute): Use specified_modules
        instead of self.config.getModules(), since the latter may be empty.

diff --git a/pygnulib/GLTestDir.py b/pygnulib/GLTestDir.py
index 7feddc0bfe..c618241bc9 100644
--- a/pygnulib/GLTestDir.py
+++ b/pygnulib/GLTestDir.py
@@ -269,10 +269,12 @@ class GLTestDir(object):
                 bold_on = '\x1b[1m'
                 bold_off = '\x1b[0m'
             print('Module list with included dependencies (indented):')
+            specified_modules_set = { str(module)
+                                      for module in specified_modules }
             for module in final_modules:
-                if str(module) in self.config.getModules():
+                if str(module) in specified_modules_set:
                     print('  %s%s%s' % (bold_on, module, bold_off))
-                else:  # if str(module) not in self.config.getModules()
+                else:  # if str(module) not in specified_modules_set
                     print('    %s' % module)
 
         # Generate lists of the modules.