c32is*: Relax license.

* modules/c32isalnum (License): Change to LGPLv2+.
* modules/c32isalpha (License): Likewise.
* modules/c32isblank (License): Likewise.
* modules/c32iscntrl (License): Likewise.
* modules/c32isdigit (License): Likewise.
* modules/c32isgraph (License): Likewise.
* modules/c32islower (License): Likewise.
* modules/c32isprint (License): Likewise.
* modules/c32ispunct (License): Likewise.
* modules/c32isspace (License): Likewise.
* modules/c32isupper (License): Likewise.
* modules/c32isxdigit (License): Likewise.
* lib/c32isalnum.c: Update license notice.
* lib/c32isalpha.c: Likewise.
* lib/c32isblank.c: Likewise.
* lib/c32iscntrl.c: Likewise.
* lib/c32isdigit.c: Likewise.
* lib/c32isgraph.c: Likewise.
* lib/c32islower.c: Likewise.
* lib/c32isprint.c: Likewise.
* lib/c32ispunct.c: Likewise.
* lib/c32isspace.c: Likewise.
* lib/c32isupper.c: Likewise.
* lib/c32isxdigit.c: Likewise.
* lib/c32is-impl.h: Likewise.

26 files changed, 143 insertions, 220 deletions

diff --git a/ChangeLog b/ChangeLog
index f0f2db1456..f178ce1381 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,32 @@
 2023-05-04  Bruno Haible  <bruno@clisp.org>
 
+	c32is*: Relax license.
+	* modules/c32isalnum (License): Change to LGPLv2+.
+	* modules/c32isalpha (License): Likewise.
+	* modules/c32isblank (License): Likewise.
+	* modules/c32iscntrl (License): Likewise.
+	* modules/c32isdigit (License): Likewise.
+	* modules/c32isgraph (License): Likewise.
+	* modules/c32islower (License): Likewise.
+	* modules/c32isprint (License): Likewise.
+	* modules/c32ispunct (License): Likewise.
+	* modules/c32isspace (License): Likewise.
+	* modules/c32isupper (License): Likewise.
+	* modules/c32isxdigit (License): Likewise.
+	* lib/c32isalnum.c: Update license notice.
+	* lib/c32isalpha.c: Likewise.
+	* lib/c32isblank.c: Likewise.
+	* lib/c32iscntrl.c: Likewise.
+	* lib/c32isdigit.c: Likewise.
+	* lib/c32isgraph.c: Likewise.
+	* lib/c32islower.c: Likewise.
+	* lib/c32isprint.c: Likewise.
+	* lib/c32ispunct.c: Likewise.
+	* lib/c32isspace.c: Likewise.
+	* lib/c32isupper.c: Likewise.
+	* lib/c32isxdigit.c: Likewise.
+	* lib/c32is-impl.h: Likewise.
+
 	unictype/ctype-*: Relax license.
 	* lib/gen-uni-tables.c (output_predicate): Bump copyright year. For
 	unictype/ctype_*, use the LGPLv2+.
diff --git a/lib/c32is-impl.h b/lib/c32is-impl.h
index 8682a6897e..74278417b1 100644
--- a/lib/c32is-impl.h
+++ b/lib/c32is-impl.h
@@ -1,26 +1,18 @@
 /* Test whether a 32-bit wide character belongs to a specific character class.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2020.  */
 
diff --git a/lib/c32isalnum.c b/lib/c32isalnum.c
index c3ab2b8299..21ae6ceb63 100644
--- a/lib/c32isalnum.c
+++ b/lib/c32isalnum.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being alphanumeric.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32isalpha.c b/lib/c32isalpha.c
index 1462cf7083..3bc13d8302 100644
--- a/lib/c32isalpha.c
+++ b/lib/c32isalpha.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being alphabetic.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32isblank.c b/lib/c32isblank.c
index edd79e8963..bb5ca5d38a 100644
--- a/lib/c32isblank.c
+++ b/lib/c32isblank.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being blank.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32iscntrl.c b/lib/c32iscntrl.c
index b067aacb1b..17897abb2a 100644
--- a/lib/c32iscntrl.c
+++ b/lib/c32iscntrl.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being a control character.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32isdigit.c b/lib/c32isdigit.c
index 70ed5ff5f7..71b6402861 100644
--- a/lib/c32isdigit.c
+++ b/lib/c32isdigit.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being a digit.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32isgraph.c b/lib/c32isgraph.c
index f23d191735..0c90be5fc3 100644
--- a/lib/c32isgraph.c
+++ b/lib/c32isgraph.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being graphic.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32islower.c b/lib/c32islower.c
index 3a3d6bc336..88b45a3261 100644
--- a/lib/c32islower.c
+++ b/lib/c32islower.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being lowercase.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32isprint.c b/lib/c32isprint.c
index f19e53dd6c..dd7c0d369f 100644
--- a/lib/c32isprint.c
+++ b/lib/c32isprint.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being printable.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32ispunct.c b/lib/c32ispunct.c
index f06d79f0c6..b14849530e 100644
--- a/lib/c32ispunct.c
+++ b/lib/c32ispunct.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being a punctuation or symbol character.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32isspace.c b/lib/c32isspace.c
index 115d0fb2a1..1e8a7cce22 100644
--- a/lib/c32isspace.c
+++ b/lib/c32isspace.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being white-space.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32isupper.c b/lib/c32isupper.c
index 5fdc2c4dae..bfd7e541a3 100644
--- a/lib/c32isupper.c
+++ b/lib/c32isupper.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being uppercase.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/lib/c32isxdigit.c b/lib/c32isxdigit.c
index 8dcd91427e..1ede8ab178 100644
--- a/lib/c32isxdigit.c
+++ b/lib/c32isxdigit.c
@@ -1,26 +1,18 @@
 /* Test 32-bit wide character for being a hexadecimal digit.
    Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - the terms of the GNU General Public License as published by the
-       Free Software Foundation; either version 2, or (at your option)
-       any later version, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License and the GNU General Public License
-   for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
diff --git a/modules/c32isalnum b/modules/c32isalnum
index 55719b534c..f980602218 100644
--- a/modules/c32isalnum
+++ b/modules/c32isalnum
@@ -38,7 +38,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32isalpha b/modules/c32isalpha
index cd33949d54..ed1e216307 100644
--- a/modules/c32isalpha
+++ b/modules/c32isalpha
@@ -38,7 +38,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32isblank b/modules/c32isblank
index b99f347074..531cc6e806 100644
--- a/modules/c32isblank
+++ b/modules/c32isblank
@@ -39,7 +39,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32iscntrl b/modules/c32iscntrl
index 3b789e0f94..f84937850a 100644
--- a/modules/c32iscntrl
+++ b/modules/c32iscntrl
@@ -38,7 +38,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32isdigit b/modules/c32isdigit
index 823b1c8dac..a05a5f1429 100644
--- a/modules/c32isdigit
+++ b/modules/c32isdigit
@@ -39,7 +39,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32isgraph b/modules/c32isgraph
index e39affd97f..62e6832883 100644
--- a/modules/c32isgraph
+++ b/modules/c32isgraph
@@ -38,7 +38,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32islower b/modules/c32islower
index 48c35548b1..b349f3524b 100644
--- a/modules/c32islower
+++ b/modules/c32islower
@@ -38,7 +38,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32isprint b/modules/c32isprint
index 290ee094ae..799ca51b93 100644
--- a/modules/c32isprint
+++ b/modules/c32isprint
@@ -38,7 +38,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32ispunct b/modules/c32ispunct
index d828130fa2..640c8c27a6 100644
--- a/modules/c32ispunct
+++ b/modules/c32ispunct
@@ -39,7 +39,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32isspace b/modules/c32isspace
index 86132cecf2..c8ae10569e 100644
--- a/modules/c32isspace
+++ b/modules/c32isspace
@@ -38,7 +38,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32isupper b/modules/c32isupper
index 0efe245522..0139fe8702 100644
--- a/modules/c32isupper
+++ b/modules/c32isupper
@@ -38,7 +38,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible
diff --git a/modules/c32isxdigit b/modules/c32isxdigit
index 11616c2e71..40ce6bcd00 100644
--- a/modules/c32isxdigit
+++ b/modules/c32isxdigit
@@ -40,7 +40,7 @@ Link:
 $(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
 
 License:
-LGPLv3+ or GPLv2+
+LGPLv2+
 
 Maintainer:
 Bruno Haible