Simplify SPDX copyright lines to the shortest canonical form...

...because if we leave them longer than 80 chars, reflow is going to
mess them up.

Dockerfile.ci

@@ -1,6 +1,6 @@
 # This image is built by the Gitlab CI pipeline to be used in subsequent
 # pipeline steps.
-# SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+# SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 # SPDX-License-Identifier: BSD-2-Clause
 
 FROM ubuntu

INSTALL.adoc

@@ -1,5 +1,5 @@
 = Installing Open Adventure =
-// SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+// SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 // SPDX-License-Identifier: CC-BY-4.0
 
 Installation now requires Python3 due to a security issue

Makefile

@@ -1,6 +1,6 @@
 # Makefile for the open-source release of adventure 2.5
 
-# SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+# SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 # SPDX-License-Identifier: BSD-2-Clause
 
 # To build with save/resume disabled, pass CFLAGS="-DADVENT_NOSAVE"

NEWS.adoc

@@ -1,5 +1,5 @@
 = Open Adventure project news =
-// SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+// SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 // SPDX-License-Identifier: CC-BY-4.0
 
 1.17: 2024-01-02::

README.adoc

@@ -1,5 +1,5 @@
 = README for Open Adventure =
-// SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+// SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 // SPDX-License-Identifier: CC-BY-4.0
 
 If you are reading this anywhere but at http://www.catb.org/~esr/open-adventure

actions.c

@@ -1,7 +1,7 @@
 /*
  * Actions for the dungeon-running code.
  *
- * SPDX-FileCopyrightText: Copyright 1977, 2005 by Will Crowther and Don Woods, Copyright 2017 by Eric S. Raymond
+ * SPDX-FileCopyrightText: (C) 1977, 2005 Will Crowther and Don Woods
  * SPDX-License-Identifier: BSD-2-Clause
  */
 

advent.adoc

@@ -1,6 +1,6 @@
 = advent(6) =
 :doctype: manpage
-// SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+// SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 // SPDX-License-Identifier: CC-BY-4.0
 
 == NAME ==

advent.desktop

@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+# SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 # SPDX-License-Identifier: BSD-2-Clause
 [Desktop Entry]
 Type=Application

advent.h

@@ -1,7 +1,7 @@
 /*
  * Dungeon types and macros.
  *
- * SPDX-FileCopyrightText: Copyright, 1977, 2005 by Will Crowther and Don Woods, Copyright 2017 by Eric S. Raymond
+ * SPDX-FileCopyrightText: (C) 1977, 2005 by Will Crowther and Don Woods
  * SPDX-License-Identifier: BSD-2-Clause
  */
 #include <stdio.h>

adventure.yaml

@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+# SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 # SPDX-License-Identifier: BSD-2-Clause
 #
 # This YAML file gets processed into a collection of data structures and

cheat.c

@@ -4,7 +4,7 @@
  * savefile(), so we know we're always outputting save files that advent
  * can import.
  *
- * SPDX-FileCopyrightText: Copyright 1977, 2005 by Will Crowther and Don Woods, Copyrighy
+ * SPDX-FileCopyrightText: (C) 1977, 2005 by Will Crowther and Don Woods
  * SPDX-License-Identifier: BSD-2-Clause
  */
 #include <getopt.h>

hints.adoc

@@ -1,5 +1,5 @@
 = Non-spoiler hints =
-// SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+// SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 // SPDX-License-Identifier: CC-BY-4.0
 
 Say the words you see.  They can have interesting effects.

history.adoc

@@ -1,6 +1,6 @@
 = A brief history of Colossal Cave Adventure =
 by Eric S. Raymond
-// SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+// SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 // SPDX-License-Identifier: CC-BY-4.0
 
 Adventure is the fons et origo of all later dungeon-crawling computer

init.c

@@ -1,7 +1,7 @@
 /*
  * Initialisation
  *
- * SPDX-FileCopyrightText: Copright 1977, 2005 by Will Crowther and Don Woodsm, Copyright 2017 by Eric S. Raymond
+ * SPDX-FileCopyrightText: (C) 1977, 2005 by Will Crowther and Don Woodsm
  * SPDX-License-Identifier: BSD-2-Clause
  */
 

main.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: Copyright 1977, 2005 by Will Crowther and Don Woods, Copyright 2017 by Eric S. Raymond
+ * SPDX-FileCopyrightText: (C) 1977, 2005 by Will Crowther and Don Woods
  * SPDX-License-Identifier: BSD-2-Clause
  */
 

make_dungeon.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+# SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 # SPDX-License-Identifier: BSD-2-Clause
 """
 This is the open-adventure dungeon generator. It consumes a YAML description of

make_graph.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+# SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 # SPDX-License-Identifier: BSD-2-Clause
 """\
 usage: make_graph.py [-a] [-d] [-m] [-s] [-v]

misc.c

@@ -1,7 +1,7 @@
 /*
  * I/O and support routines.
  *
- * SPDX-FileCopyrightText: Copyright 1977, 2005 by Will Crowther and Don Woods, 2017 by Eric S. Raymond
+ * SPDX-FileCopyrightText: (C) 1977, 2005 by Will Crowther and Don Woods
  * SPDX-License-Identifier: BSD-2-Clause
  */
 

notes.adoc

@@ -1,6 +1,6 @@
 = Open Adventure Maintainer's Notes =
 by Eric S. Raymond
-// SPDX-FileCopyrightText: Copyright Eric S. Raymond <esr@thyrsus.com>
+// SPDX-FileCopyrightText: (C) Eric S. Raymond <esr@thyrsus.com>
 // SPDX-License-Identifier: CC-BY-4.0
 
 In which we explain what has been done to this code since Don Woods

saveresume.c

@@ -4,7 +4,7 @@
  * (ESR) This replaces  a bunch of particularly nasty FORTRAN-derived code;
  * see the history.adoc file in the source distribution for discussion.
  *
- * SPDX-FileCopyrightText: Copyright 1977, 2005 by Will Crowther and Don Woods, Copyright 2017 by Eric S. Raymond
+ * SPDX-FileCopyrightText: (C) 1977, 2005 by Will Crowther and Don Woods
  * SPDX-License-Identifier: BSD-2-Clause
  */
 

score.c

@@ -1,7 +1,7 @@
 /*
  * Scoring and wrap-up.
  *
- * SPDX-FileCopyrightText: Copyright 977, 2005 by Will Crowther and Don Woods, Copyright, 2017 by Eric S. Raymond
+ * SPDX-FileCopyrightText: (C) 1977, 2005 by Will Crowther and Don Woods
  * SPDX-License-Identifier: BSD-2-Clause
  */
 #include <stdlib.h>