fish_key_reader: Exit after "--version"

src/bin/fish_key_reader.rs

@@ -341,6 +341,7 @@ fn parse_flags(continuous_mode: &mut bool, verbose: &mut bool) -> bool {
                         fish::BUILD_VERSION
                     )
                 );
+                std::process::exit(0);
             }
             'V' => {
                 *verbose = true;

tests/pexpects/fkr.py

@@ -18,6 +18,10 @@ send, sendline, sleep, expect_prompt, expect_re, expect_str = (
 )
 expect_prompt()
 
+sendline("$fish_key_reader --version")
+expect_re("fish_key_reader, version .*")
+expect_prompt()
+
 sendline("exec $fish_key_reader -c -V")
 
 # Do we get the expected startup prompt?