[PATCH] editor: only save (and restore) the terminal if using a tty

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If the editor is invoked without a controlling terminal, then
saving the state and restoring it later is not very useful and
could generate signals that the invoking process wouldn't know
how to handle.

if git's standard output is not connected to a terminal, then
presume there is no need to worry if the invoking terminal could
garble it.

Reported-by: Alexander Veit <alexander.veit@xxxxxxx>
Signed-off-by: Carlo Marcelo Arenas Belón <carenas@xxxxxxxxx>
---
 editor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/editor.c b/editor.c
index 674309eed8..214e3834cb 100644
--- a/editor.c
+++ b/editor.c
@@ -86,7 +86,7 @@ static int launch_specified_editor(const char *editor, const char *path,
 		p.env = env;
 		p.use_shell = 1;
 		p.trace2_child_class = "editor";
-		term_fail = save_term(1);
+		term_fail = isatty(1) ? save_term(1) : 1;
 		if (start_command(&p) < 0) {
 			if (!term_fail)
 				restore_term();
-- 
2.34.0.352.g07dee3c5e1




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