Merge branch '4572_cleanup'

* 4572_cleanup: (43 commits)
  Update po/*.po.
  Update copyright years.
  maint/update-years.sh: add command to restore script permissions.
  (check_dir_is_empty): handle the return value of mc_opendir().
  viewer: type accuracy related to the WView::locked flag.
  mcedit: type accuracy.
  mcedit: reset WEdit::locked flag at file unlock.
  WEdit: remove unused member max_column.
  search: change types of start and end search positions from gsize to off_t.
  mcedit (editsearch): minor refactoring.
  (edit_search_show_error): rename from edit_show_search_error.
  mcedit: move definition of edit_search_options_t to editsearch.c.
  src/vfs/tar/tar.c: fix typos.
  (size_trunc_len): fix Undefined Binary Operator Result.
  (quick_create_labeled_input): fix potential leak of memory.
  (listbox_drawscroll:) fix division by zero warning.
  (edit_dialog_search_show): fix uninitialized value and null pointer dereference.
  mcedit: fix uninitialized value function call.
  (configure_box): fix uninitialized value function call.
  (quick_dialog_skip): fix undefined behavior.
  ...

configure.ac

@@ -97,9 +97,9 @@ if $HAVE_nroff; then
     AC_CACHE_VAL(mc_cv_mandoc, [
     nroff -mandoc < /dev/null > /dev/null 2>&1
     if test $? = 0; then
-	mc_cv_mandoc=-mandoc
+        mc_cv_mandoc=-mandoc
     else
-	mc_cv_mandoc=-man
+        mc_cv_mandoc=-man
     fi
     ])
     MANDOC=$mc_cv_mandoc
@@ -109,9 +109,9 @@ if $HAVE_nroff; then
     AC_CACHE_VAL(mc_cv_man_nocolor, [
     nroff -c < /dev/null > /dev/null 2>&1
     if test $? = 0; then
-	mc_cv_man_nocolor=-c
+        mc_cv_man_nocolor=-c
     else
-	mc_cv_man_nocolor=
+        mc_cv_man_nocolor=
     fi
     ])
     MAN_FLAGS=$mc_cv_man_nocolor
@@ -122,12 +122,12 @@ if $HAVE_nroff; then
     mc_cv_nroff_tascii=
     nroff -Tlatin1 < /dev/null > /dev/null 2>&1 /dev/null
     if test $? = 0; then
-	mc_cv_nroff_tascii=-Tlatin1
+        mc_cv_nroff_tascii=-Tlatin1
     else
         nroff -Tascii < /dev/null > /dev/null 2>&1 /dev/null
         if test $? = 0; then
-	    mc_cv_nroff_tascii=-Tascii
-	fi
+            mc_cv_nroff_tascii=-Tascii
+        fi
     fi
     ])
     AC_MSG_RESULT([${mc_cv_nroff_tascii-no}])
@@ -239,9 +239,9 @@ dnl Check for header files
 dnl ############################################################################
 
 AC_CHECK_HEADERS([string.h memory.h limits.h malloc.h \
-	utime.h sys/statfs.h sys/vfs.h \
-	sys/select.h sys/ioctl.h stropts.h arpa/inet.h \
-	sys/socket.h])
+    utime.h sys/statfs.h sys/vfs.h \
+    sys/select.h sys/ioctl.h stropts.h arpa/inet.h \
+    sys/socket.h])
 dnl This macro is redefined in m4.include/gnulib/sys_types_h.m4
 dnl   to work around a buggy version in autoconf <= 2.69.
 AC_HEADER_MAJOR
@@ -318,9 +318,9 @@ dnl Check for functions
 dnl ############################################################################
 
 AC_CHECK_FUNCS([\
-	strverscmp \
-	strncasecmp \
-	realpath
+    strverscmp \
+    strncasecmp \
+    realpath
 ])
 
 dnl getpt is a GNU Extension (glibc 2.1.x)
@@ -420,17 +420,16 @@ AC_ARG_WITH([gpm-mouse],
 case $host_os in
 linux*)
     if test x$with_gpm_mouse != xno; then
-	AC_CHECK_LIB(gpm, Gpm_Repeat,
-	    [AC_DEFINE(HAVE_LIBGPM, 1,
-		       [Define to enable gpm mouse support on Linux])
-	    mouse_lib="gpm and xterm"
-	    MCLIBS="$MCLIBS -lgpm"],
+        AC_CHECK_LIB(gpm, Gpm_Repeat,
+            [AC_DEFINE(HAVE_LIBGPM, 1, [Define to enable gpm mouse support on Linux])
+            mouse_lib="gpm and xterm"
+            MCLIBS="$MCLIBS -lgpm"],
             if test "x$with_gpm_mouse" = "xyes"; then
                 [AC_MSG_ERROR([libgpm is missing or older than 0.18])]
             else
                 [AC_MSG_WARN([libgpm is missing or older than 0.18])]
             fi
-	)
+        )
     fi
     ;;
 esac
@@ -477,12 +476,12 @@ AC_ARG_WITH([diff_viewer],
     AS_HELP_STRING([--with-diff-viewer], [Compile with diff viewer @<:@yes@:>@]))
 
 if test x$with_diff_viewer != xno; then
-	AC_DEFINE(USE_DIFF_VIEW, 1, [Define to enable diff viewer])
-	use_diff=yes
-	diff_msg="yes"
-	AC_MSG_NOTICE([using diff viewer])
+        AC_DEFINE(USE_DIFF_VIEW, 1, [Define to enable diff viewer])
+        use_diff=yes
+        diff_msg="yes"
+        AC_MSG_NOTICE([using diff viewer])
 else
-	diff_msg="no"
+        diff_msg="no"
 fi
 
 mc_SUBSHELL
@@ -522,20 +521,20 @@ ALL_DOC_LINGUAS="es hu it pl ru sr"
 DOC_LINGUAS=
 if test "x$USE_NLS" = xyes; then
     if test -z "$LINGUAS"; then
-	langs="`grep -v '^#' $srcdir/po/LINGUAS`"
+        langs="`grep -v '^#' $srcdir/po/LINGUAS`"
     else
-	langs="$LINGUAS"
+        langs="$LINGUAS"
     fi
 else
     langs=
 fi
 
 for h_lang in $ALL_DOC_LINGUAS; do
     for lang in $langs; do
-	if test "$lang" = "$h_lang"; then
-	    DOC_LINGUAS="$DOC_LINGUAS $lang"
-	    break
-	fi
+        if test "$lang" = "$h_lang"; then
+            DOC_LINGUAS="$DOC_LINGUAS $lang"
+            break
+        fi
     done
 done
 AC_SUBST(DOC_LINGUAS)

doc/HACKING

@@ -13,16 +13,7 @@ lists.
 Compiling from GIT
 ==================
 
-To compile GNU Midnight commander from GIT, the following software is
-required:
-
-Autoconf 2.64 and above (latest is recommended)
-Automake 1.14 and above (latest is recommended)
-Gettext 0.18.2 and above
-Glib 2.32 and above
-
-Full list of requirements you can see at:
-https://www.midnight-commander.org/wiki/doc/buildAndInstall/req
+The full list of requirements is listed in the INSTALL file.
 
 It is recommended that all those tools are installed with the same
 prefix.  Make sure that the tools with the right version are first in

doc/INSTALL

@@ -1,18 +1,40 @@
 Build requirements for GNU Midnight Commander
 ---------------------------------------------
 
-- glibc
-- gcc
+- glibc or uClibc or musl
+  - https://www.gnu.org/software/libc/
+  - https://uclibc.org
+  - https://www.musl-libc.org
+- gcc or clang
+  - https://gcc.gnu.org
+  - https://clang.llvm.org
 - make
+  - https://www.gnu.org/software/make/
 - autoconf >= 2.64
+  - https://www.gnu.org/software/autoconf/
 - automake >= 1.14
+  - https://www.gnu.org/software/automake/
 - libtool
+  - https://www.gnu.org/software/libtool/
+- pkg-config (optional)
+  - https://pkg-config.freedesktop.org/wiki/
 - glib2 >= 2.32
-- slang2 or ncurses
+  - https://www.gtk.org
+- slang2 or ncurses screen library
+  - https://www.jedsoft.org/slang/
+  - https://invisible-island.net/ncurses/ncurses.html
 - gettext >= 0.18.2
-- libssh2 >= 1.2.8 is required only for sftp vfs
-- libaspell to support spell checking in the internal editor
-- ext2fs >= 1.42.4 to support ext{2,3,4}fs extended attributes
+  - https://www.gnu.org/software/gettext/
+- pcre or pcre2 (as an alternative to glib-regexp)
+  - https://www.pcre.org
+- gpm (general purpose mouse daemon as an alternative to xterm mouse)
+  - https://www.nico.schottelius.org/software/gpm/
+- libssh2 >= 1.2.8 (required only for sftp vfs)
+  - https://libssh2.org
+- libaspell (spell checking support in the internal editor)
+  - http://aspell.net
+- ext2fs >= 1.42.4 (support for ext{2,3,4}fs extended attributes)
+  - https://e2fsprogs.sourceforge.net
 
 
 Installation instructions for GNU Midnight Commander
@@ -222,61 +244,16 @@ only needed on systems where users cannot access /dev/vcsaN, where N is
 the virtual console number, on which the uses is logged on.
 
 
-Obtaining related software
---------------------------
-
-glib
-----
-
-The only "hard" dependency of GNU Midnight Commander is glib.  You can
-get glib from
-
-* https://download.gnome.org/sources/glib/
-
-Minimal version of glib: 2.32.0
-Recommended version: 2.32.x and higher.
-
-Newer versions may work, but haven't been tested.
-
-PCRE
-----
-
-Both PCRE and PCRE2 libraries are supported. You can get PCRE from
-
-* https://www.pcre.org
-
 Terminal database
 -----------------
 
 There are many incomplete terminal databases out there, however, a
 complete terminfo is bundled with ncurses.  (It is simple to generate
 the termcap database using the infocmp utility in ncurses).
 
-Some terminfo data are included with the mc distribution (lib/*.ti).
-Particularly linux, xterm and vt100. Use e.g. ''tic linux.ti'' to use
-them.
-
 If you want to run mc on xterm/color_xterm/ansi_xterm (not rxvt), then
-you might read lib/README.xterm for further information.
-
-Screen libraries
-----------------
-
-GNU Midnight Commander can use the included version of S-Lang, but you
-can get the latest version here:
-
-* https://www.jedsoft.org/slang/
-
-Alternatively, you can use ncurses:
-
-* https://invisible-island.net/ncurses/announce.html
-
-Mouse support
--------------
-
-The general purpose mouse (gpm) daemon is available from
+you might read contrib/README.xterm for further information.
 
-* https://www.nico.schottelius.org/software/gpm/
 
 Porting
 -------

lib/charsets.c

@@ -1,7 +1,7 @@
 /*
    Text conversion from one charset to another.
 
-   Copyright (C) 2001-2024
+   Copyright (C) 2001-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/event/event.c

@@ -2,7 +2,7 @@
    Handle  events in application.
    Interface functions: init/deinit; start/stop
 
-   Copyright (C) 2011-2024
+   Copyright (C) 2011-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/event/manage.c

@@ -2,7 +2,7 @@
    Handle any events in application.
    Manage events: add, delete, destroy, search
 
-   Copyright (C) 2011-2024
+   Copyright (C) 2011-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/event/raise.c

@@ -2,7 +2,7 @@
    Handle any events in application.
    Raise events.
 
-   Copyright (C) 2011-2024
+   Copyright (C) 2011-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/filehighlight/common.c

@@ -2,7 +2,7 @@
    File highlight plugin.
    Interface functions
 
-   Copyright (C) 2009-2024
+   Copyright (C) 2009-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/filehighlight/get-color.c

@@ -2,7 +2,7 @@
    File highlight plugin.
    Interface functions. get color pair index for highlighted file.
 
-   Copyright (C) 2009-2024
+   Copyright (C) 2009-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/filehighlight/ini-file-read.c

@@ -2,7 +2,7 @@
    File highlight plugin.
    Reading and parse rules from ini-files
 
-   Copyright (C) 2009-2024
+   Copyright (C) 2009-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/glibcompat.c

@@ -1,7 +1,7 @@
 /*
    GLIB - Library of useful routines for C programming
 
-   Copyright (C) 2009-2024
+   Copyright (C) 2009-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/global.c

@@ -1,7 +1,7 @@
 /*
    Global structure for some library-related variables
 
-   Copyright (C) 2009-2024
+   Copyright (C) 2009-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/hook.c

@@ -4,7 +4,7 @@
    Slavaz: Warning! this file is deprecated and should be replaced
    by mcevents functional.
 
-   Copyright (C) 1994-2024
+   Copyright (C) 1994-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/keybind.c

@@ -1,7 +1,7 @@
 /*
    Definitions of key bindings.
 
-   Copyright (C) 2005-2024
+   Copyright (C) 2005-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/lock.c

@@ -1,7 +1,7 @@
 /*
    File locking
 
-   Copyright (C) 2003-2024
+   Copyright (C) 2003-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/logging.c

@@ -1,7 +1,7 @@
 /*
    Provides a log file to ease tracing the program.
 
-   Copyright (C) 2006-2024
+   Copyright (C) 2006-2025
    Free Software Foundation, Inc.
 
    Written by:

lib/mcconfig/common.c

@@ -1,7 +1,7 @@
 /*
    Configure module for the Midnight Commander
 
-   Copyright (C) 1994-2024
+   Copyright (C) 1994-2025
    Free Software Foundation, Inc.
 
    This file is part of the Midnight Commander.

lib/mcconfig/get.c

@@ -1,7 +1,7 @@
 /*
    Configure module for the Midnight Commander
 
-   Copyright (C) 1994-2024
+   Copyright (C) 1994-2025
    Free Software Foundation, Inc.
 
    This file is part of the Midnight Commander.