fix(_comp_delimited): append space by default

Author: scop

bash_completion

@@ -706,6 +706,9 @@ _comp_delimited()
         local -a existing
         local x i ifs=$IFS IFS=$delimiter
         existing=($cur)
+        # Do not remove the last from existing if it's not followed by the
+        # delimiter so we get space appended.
+        [[ $cur == *"$delimiter" ]] || unset "existing[${#existing[@]}-1]"
         IFS=$ifs
         for x in ${existing+"${existing[@]}"}; do
             for i in "${!COMPREPLY[@]}"; do

test/t/test_man.py

@@ -113,3 +113,26 @@ def test_10(self, bash, colonpath, completion):
     @pytest.mark.complete("man -", require_cmd=True)
     def test_11(self, completion):
         assert completion
+
+    @pytest.mark.complete("man -S 1", require_cmd=True)
+    def test_delimited_first(self, completion):
+        # just appends space
+        assert not completion
+        assert completion.endswith(" ")
+
+    @pytest.mark.complete("man -S 1:", require_cmd=True)
+    def test_delimited_after_delimiter(self, completion):
+        assert completion
+        assert "1" not in completion
+
+    @pytest.mark.complete("man -S 1:2", require_cmd=True)
+    def test_delimited_later(self, completion):
+        # just appends space
+        assert not completion
+        assert completion.endswith(" ")
+
+    @pytest.mark.complete("man -S 1:1", require_cmd=True)
+    def test_delimited_deduplication(self, completion):
+        # no completion, no space appended
+        assert not completion
+        assert not completion.endswith(" ")