create_manpage_completions.py: refactor: clean up parse_manpage_at_path

share/tools/create_manpage_completions.py

@@ -748,7 +748,21 @@ def cleanup_autogenerated_file(path):
 
 
 def parse_manpage_at_path(manpage_path, output_directory):
-    filename = os.path.basename(manpage_path)
+    # Return if CMDNAME is in 'ignoredcommands'
+    ignoredcommands = [
+        "cc",
+        "g++",
+        "gcc",
+        "c++",
+        "cpp",
+        "emacs",
+        "gprof",
+        "wget",
+        "ld",
+        "awk",
+    ]
+    if CMDNAME in ignoredcommands:
+        return
 
     # Clear diagnostics
     global diagnostic_indent
@@ -788,27 +802,10 @@ def parse_manpage_at_path(manpage_path, output_directory):
 
     manpage = str(manpage)
 
-    # Get the "base" command, e.g. gcc.1.gz -> gcc
-    cmd_base = CMDNAME.split(".", 1)[0]
-    ignoredcommands = [
-        "cc",
-        "g++",
-        "gcc",
-        "c++",
-        "cpp",
-        "emacs",
-        "gprof",
-        "wget",
-        "ld",
-        "awk",
-    ]
-    if cmd_base in ignoredcommands:
-        return
-
     # Ignore perl's gazillion man pages
     ignored_prefixes = ["perl", "zsh"]
     for prefix in ignored_prefixes:
-        if cmd_base.startswith(prefix):
+        if CMDNAME.startswith(prefix):
             return
 
     # Ignore the millions of links to BUILTIN(1)