contrib: address gen-manpages feedback from #24263

Co-authored-by: Carl Dong <contact@carldong.me>

contrib/devtools/gen-manpages.py

@@ -32,7 +32,6 @@ mandir = os.getenv('MANDIR', os.path.join(topdir, 'doc/man'))
 
 # Verify that all the required binaries are usable, and extract copyright
 # message in a first pass.
-copyright = None
 versions = []
 for relpath in BINARIES:
     abspath = os.path.join(builddir, relpath)
@@ -42,18 +41,17 @@ for relpath in BINARIES:
         print(f'{abspath} not found or not an executable', file=sys.stderr)
         sys.exit(1)
     # take first line (which must contain version)
-    verstr = r.stdout.split('\n')[0]
+    verstr = r.stdout.splitlines()[0]
     # last word of line is the actual version e.g. v22.99.0-5c6b3d5b3508
     verstr = verstr.split()[-1]
     assert verstr.startswith('v')
+    # remaining lines are copyright
+    copyright = r.stdout.split('\n')[1:]
+    assert copyright[0].startswith('Copyright (C)')
 
-    # Only bitcoin-qt prints the copyright message on --version, so store it specifically.
-    if relpath == 'src/qt/bitcoin-qt':
-        copyright = r.stdout.split('\n')[1:]
+    versions.append((abspath, verstr, copyright))
 
-    versions.append((abspath, verstr))
-
-if any(verstr.endswith('-dirty') for (_, verstr) in versions):
+if any(verstr.endswith('-dirty') for (_, verstr, _) in versions):
     print("WARNING: Binaries were built from a dirty tree.")
     print('man pages generated from dirty binaries should NOT be committed.')
     print('To properly generate man pages, please commit your changes (or discard them), rebuild, then run this script again.')
@@ -61,13 +59,13 @@ if any(verstr.endswith('-dirty') for (_, verstr) in versions):
 
 with tempfile.NamedTemporaryFile('w', suffix='.h2m') as footer:
     # Create copyright footer, and write it to a temporary include file.
-    assert copyright
+    # Copyright is the same for all binaries, so just use the first.
     footer.write('[COPYRIGHT]\n')
-    footer.write('\n'.join(copyright).strip())
+    footer.write('\n'.join(versions[0][2]).strip())
     footer.flush()
 
     # Call the binaries through help2man to produce a manual page for each of them.
-    for (abspath, verstr) in versions:
+    for (abspath, verstr, _) in versions:
         outname = os.path.join(mandir, os.path.basename(abspath) + '.1')
         print(f'Generating {outname}…')
         subprocess.run([help2man, '-N', '--version-string=' + verstr, '--include=' + footer.name, '-o', outname, abspath], check=True)