fix(make): deactivate the display-only mode

In the display-only mode where COMP_TYPE=9, 37, or 42, only a part of
the completion is stored in COMPREPLY for displaying purposes.  For
example, "xyz" is stored in COMPREPLY when "abc/xyz" is the candidate
and "abc/" is already inserted.

However, the test framework extracts generated completions using
COMP_TYPE=37 by setting "set show-all-if-ambiguous off", which would
be broken by the display-only mode.  There is no simple way to make it
work with the test framework, and the display-only mode does not seem
to be essential.  For the time being, we deactivate the display-only
mode.  See also discussions in the following links:

#544
#546

completions/make

@@ -209,12 +209,19 @@ _make()
             fi
         done
 
-        # recognise that possible completions are only going to be displayed
-        # so only the base name is shown
+        # recognise that possible completions are only going to be displayed so
+        # only the base name is shown.
+        #
+        # Note: This is currently turned off because the test suite of
+        # bash-completion conflicts with it; it uses "set show-all-if-ambiguous
+        # on" (causing COMP_TYPE == 37) to retrieve the action completion
+        # results, and also the compact form with only the basenames is not
+        # essentially needed.  To re-enable it, please uncomment the following
+        # if-statement.
         local mode=--
-        if ((COMP_TYPE != 9 && COMP_TYPE != 37 && COMP_TYPE != 42)); then
-            mode=-d # display-only mode
-        fi
+        # if ((COMP_TYPE != 9 && COMP_TYPE != 37 && COMP_TYPE != 42)); then
+        #     mode=-d # display-only mode
+        # fi
 
         local IFS=$' \t\n' script=$(_make_target_extract_script $mode "$cur")
         COMPREPLY=($(LC_ALL=C \

test/t/test_make.py

@@ -18,7 +18,7 @@ def test_2(self, bash, completion):
 
     @pytest.mark.complete("make .cache/", cwd="make", require_cmd=True)
     def test_3(self, bash, completion):
-        assert completion == "1 2".split()
+        assert completion == ".cache/1 .cache/2".split()
         os.remove(f"{bash.cwd}/make/extra_makefile")
 
     @pytest.mark.complete("make ", cwd="shared/empty_dir")
@@ -36,7 +36,7 @@ def test_6(self, bash, completion):
 
     @pytest.mark.complete("make .cache/.", cwd="make", require_cmd=True)
     def test_7(self, bash, completion):
-        assert completion == ".1 .2".split()
+        assert completion == ".cache/.1 .cache/.2".split()
         os.remove(f"{bash.cwd}/make/extra_makefile")
 
     @pytest.mark.complete("make -C make ", require_cmd=True)
@@ -61,7 +61,7 @@ def test_github_issue_544_2(self, bash):
 
     def test_github_issue_544_3(self, bash):
         completion = assert_complete(bash, "make 123/")
-        assert completion == ["xaa", "xbb"]
+        assert completion == ["123/xaa", "123/xbb"]
 
     def test_github_issue_544_4(self, bash):
         completion = assert_complete(bash, "make 123/xa")