doc: foot.1 footclient.1: document exit status

doc/foot.1.scd

@@ -28,7 +28,7 @@ the foot command line
 
 *-C*,*--check-config*
 	Verify configuration and then exit with 0 if ok, otherwise exit
-	with 1.
+	with 230 (see *EXIT STATUS*).
 
 *-f*,*--font*=_FONT_
 	Comma separated list of fonts to use, in fontconfig format (see
@@ -136,6 +136,13 @@ the foot command line
 *-v*,*--version*
 	Show the version number and quit.
 
+# EXIT STATUS
+
+Foot will exit with code 230 if there is a failure in foot itself.
+
+In all other cases, the exit code is that of the client application
+(i.e. the shell).
+
 # KEYBOARD SHORTCUTS
 
 The following keyboard shortcuts are available.

doc/footclient.1.scd

@@ -17,8 +17,8 @@ mode.
 
 Running it without arguments will open a new terminal window (hosted
 in the foot server), with your default shell. The exit code will be
-that of the terminal (thus, *footclient* does not exit until the
+that of the terminal. I.e *footclient* does not exit until the
-terminal has terminated).
+terminal has terminated.
 
 # OPTIONS
 
@@ -74,6 +74,20 @@ terminal has terminated).
 *-v*,*--version*
 	Show the version number and quit
 
+# EXIT STATUS
+
+Footlient will exit with code 220 if there is a failure in footclient
+itself (for example, the server socket does not exist).
+
+If *-N*,*--no-wait* is used, footclient exits with code 0 as soon as
+the foot server has been instructed to open a new window.
+
+If not, footclient may also exit with code 230. This indicates a
+failure in the foot server.
+
+In all other cases the exit code is that of the client application
+(i.e. the shell).
+
 # SEE ALSO
 
 *foot*(1)