Add +x (escaped command) flag

Here is a summary of the squashed commits:

Fix comparison (line 55)
Temporarily suspend SIGCHLD handler
Support only one file argument (it gets WAY too complex otherwise)
Clean up properly
Clean up code
Properly handle SIGINT during escaped command
Abort escaped command if previous command failed

1 files changed, 2 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 8992ccf..1068da9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+CFLAGS += -Wall -pedantic
+
 rtty: rtty.c
 
 install: rtty