master 3951199985: Port TZ settings to POSIX

[Paul Eggert]

branch: master
commit 395119998574051e53d466d55136d3e6498e90ef
Author: Paul Eggert <eggert@cs.ucla.edu>
Commit: Paul Eggert <eggert@cs.ucla.edu>

    Port TZ settings to POSIX
    
    * lisp/Makefile.in (.el.elc):
    * lisp/net/tramp-sh.el (tramp-sh-handle-set-file-times):
    * lisp/net/tramp-sudoedit.el (tramp-sudoedit-handle-set-file-times):
    Use the POSIX standard TZ=UTC0 rather than the GNU extension
    TZ=UTC to set the time zone to UTC.
---
 lisp/Makefile.in           | 2 +-
 lisp/net/tramp-sh.el       | 2 +-
 lisp/net/tramp-sudoedit.el | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lisp/Makefile.in b/lisp/Makefile.in
index e66d80f814..4c26e42370 100644
--- a/lisp/Makefile.in
+++ b/lisp/Makefile.in
@@ -315,7 +315,7 @@ ifeq ($(ANCIENT),yes)
 .el.elc:
        $(AM_V_ELC)$(emacs) $(BYTE_COMPILE_FLAGS) \
        -l comp -f batch-byte-compile $<
-       TZ=UTC touch -t 197001010000 $@
+       TZ=UTC0 touch -t 197001010000 $@
 else
 .el.elc:
        $(AM_V_ELC)$(emacs) $(BYTE_COMPILE_FLAGS) \
diff --git a/lisp/net/tramp-sh.el b/lisp/net/tramp-sh.el
index 1d0d0f8b1b..3240f5352a 100644
--- a/lisp/net/tramp-sh.el
+++ b/lisp/net/tramp-sh.el
@@ -1528,7 +1528,7 @@ of."
               time)))
        (tramp-send-command-and-check
         v (format
-           "env TZ=UTC %s %s %s %s"
+           "env TZ=UTC0 %s %s %s %s"
            (tramp-get-remote-touch v)
            (if (tramp-get-connection-property v "touch-t")
                (format "-t %s" (format-time-string "%Y%m%d%H%M.%S" time t))
diff --git a/lisp/net/tramp-sudoedit.el b/lisp/net/tramp-sudoedit.el
index f8b602e34c..dc87c590b3 100644
--- a/lisp/net/tramp-sudoedit.el
+++ b/lisp/net/tramp-sudoedit.el
@@ -568,7 +568,7 @@ the result will be a local, non-Tramp, file name."
               nil
             time)))
       (tramp-sudoedit-send-command
-       v "env" "TZ=UTC" "touch" "-t"
+       v "env" "TZ=UTC0" "touch" "-t"
        (format-time-string "%Y%m%d%H%M.%S" time t)
        (if (eq flag 'nofollow) "-h" "")
        (tramp-compat-file-name-unquote localname)))))