Assign error-specific exit codes to constants

core/copyUNIXGeneric.go

@@ -21,14 +21,14 @@ func copyField(executableName, copySubject string) {
 		cmd = exec.Command("xclip", "-sel", "c")
 	} else {
 		fmt.Println(AnsiError + "Clipboard platform could not be determined - Note that the clipboard does not function in a raw TTY" + AnsiReset)
-		os.Exit(110)
+		os.Exit(ErrorClipboard)
 	}
 
 	writeToStdin(cmd, copySubject)
 	err := cmd.Run()
 	if err != nil {
 		fmt.Println(AnsiError+"Failed to copy to clipboard:", err.Error()+AnsiReset)
-		os.Exit(110)
+		os.Exit(ErrorClipboard)
 	}
 
 	// launch clipboard clearing process if executableName is provided
@@ -38,7 +38,7 @@ func copyField(executableName, copySubject string) {
 		err = cmd.Start()
 		if err != nil {
 			fmt.Println(AnsiError + "Failed to launch automated clipboard clearing process - Does this libmutton implementation support the \"clipclear\" argument?" + AnsiReset)
-			os.Exit(110)
+			os.Exit(ErrorClipboard)
 		}
 		Exit(0) // only exit if clipboard clearing process is launched, otherwise assume continuous clipboard refresh
 	}
@@ -59,14 +59,14 @@ func clipClear(oldContents string) {
 		cmdPaste = exec.Command("xclip", "-o", "-sel", "c")
 	} else {
 		fmt.Println(AnsiError + "Clipboard platform could not be determined - Neither $WAYLAND_DISPLAY nor $DISPLAY are set" + AnsiReset)
-		os.Exit(110)
+		os.Exit(ErrorClipboard)
 	}
 
 	// read current clipboard contents
 	newContents, err := cmdPaste.Output()
 	if err != nil {
 		fmt.Println(AnsiError+"Failed to read clipboard contents:", err.Error()+AnsiReset)
-		os.Exit(110)
+		os.Exit(ErrorClipboard)
 	}
 
 	// clear clipboard if contents have not been modified
@@ -74,7 +74,7 @@ func clipClear(oldContents string) {
 		err = cmdClear.Run()
 		if err != nil {
 			fmt.Println(AnsiError+"Failed to clear clipboard:", err.Error()+AnsiReset)
-			os.Exit(110)
+			os.Exit(ErrorClipboard)
 		}
 	}
 	os.Exit(0) // use os.Exit instead of core.Exit, as this function runs out of a background subprocess that is invisible to the user (will never appear in GUI/TUI environment)