Enable --strip-cwd-prefix by default except with -0

Fixes #1046.

src/app.rs

@@ -719,10 +719,10 @@ pub fn build_app() -> Command<'static> {
                 .long("strip-cwd-prefix")
                 .conflicts_with_all(&["path", "search-path"])
                 .hide_short_help(true)
-                .help("strip './' prefix from non-tty outputs")
+                .help("strip './' prefix from -0/--print0 output")
                 .long_help(
-                    "By default, relative paths are prefixed with './' when the output goes to a non \
-                     interactive terminal (TTY). Use this flag to disable this behaviour."
+                    "By default, relative paths are prefixed with './' when -0/--print0 is given, to \
+                     make them safer for use with xargs. Use this flag to disable this behaviour."
                 )
         );
 

src/main.rs

@@ -385,7 +385,7 @@ fn construct_config(matches: clap::ArgMatches, pattern_regex: &str) -> Result<Co
             }),
         strip_cwd_prefix: (!matches.is_present("path")
             && !matches.is_present("search-path")
-            && (interactive_terminal || matches.is_present("strip-cwd-prefix"))),
+            && (!matches.is_present("null_separator") || matches.is_present("strip-cwd-prefix"))),
     })
 }