reset SIGWINCH when spawning a child program for displaying text items - sacc - sacc(omys), simple console gopher client

git clone git://bitreich.org/sacc/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/sacc/

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---

commit 0573022ce4ceab92394c35c5701abe061f2ec35a

parent eae2a995544b2b48c3a7debcb186a00aa0c400b3

Author: Hiltjo Posthuma 

Date:   Wed, 26 May 2021 16:18:22 +0200

reset SIGWINCH when spawning a child program for displaying text items

When opening a text item in the pager such as less and then resizing the
terminal it would garble/overwrite the terminal output because sacc was
redrawn.

Diffstat:
  M sacc.c                              |      11 +++++++++++

1 file changed, 11 insertions(+), 0 deletions(-)
---

diff --git a/sacc.c b/sacc.c

@@ -285,10 +285,17 @@ printdir(Item *item)
 static void
 displaytextitem(Item *item)
 {
+        struct sigaction sa;
         FILE *pagerin;
         int pid, wpid;
 
+        sigemptyset(&sa.sa_mask);
+        sa.sa_flags = SA_RESTART;
+        sa.sa_handler = SIG_DFL;
+        sigaction(SIGWINCH, &sa, NULL);
+
         uicleanup();
+
         switch (pid = fork()) {
         case -1:
                 diag("Couldn't fork.");
@@ -304,6 +311,10 @@ displaytextitem(Item *item)
                         ;
         }
         uisetup();
+
+        sa.sa_handler = uisigwinch;
+        sigaction(SIGWINCH, &sa, NULL);
+        uisigwinch(SIGWINCH); /* force redraw */
 }
 
 static char *