Remove concat! macro from localized strings

This is done in preparation for a proc macro which extracts strings which are
passed to `gettext`. Because the `concat!` macro would get expanded after the
proc macro, the proc macro would still see the `concat!`, which it cannot
handle.

src/builtins/fg.rs

@@ -97,10 +97,7 @@ pub fn fg(parser: &Parser, streams: &mut IoStreams, argv: &mut [&wstr]) -> Built
                     job_pos = Some(pos);
                     job = if !j.wants_job_control() {
                         streams.err.append(wgettext_fmt!(
-                            concat!(
-                                "%ls: Can't put job %d, '%ls' to foreground because ",
-                                "it is not under job control\n"
-                            ),
+                            "%ls: Can't put job %d, '%ls' to foreground because it is not under job control\n",
                             cmd,
                             raw_pid,
                             j.command()

src/builtins/read.rs

@@ -107,10 +107,7 @@ fn parse_cmd_opts(
             }
             'i' => {
                 streams.err.append(wgettext_fmt!(
-                    concat!(
-                        "%ls: usage of -i for --silent is deprecated. Please ",
-                        "use -s or --silent instead.\n"
-                    ),
+                    "%ls: usage of -i for --silent is deprecated. Please use -s or --silent instead.\n",
                     cmd
                 ));
                 return Err(STATUS_INVALID_ARGS);

src/builtins/shared.rs

@@ -26,10 +26,8 @@
 pub const BUILTIN_ERR_MISSING: &str = "%ls: %ls: option requires an argument\n";
 
 /// Error message on missing man page.
-pub const BUILTIN_ERR_MISSING_HELP: &str = concat!(
-    "fish: %ls: missing man page\nDocumentation may not be installed.\n`help %ls` will ",
-    "show an online version\n"
-);
+pub const BUILTIN_ERR_MISSING_HELP: &str =
+    "fish: %ls: missing man page\nDocumentation may not be installed.\n`help %ls` will show an online version\n";
 
 /// Error message on multiple scope levels for variables.
 pub const BUILTIN_ERR_GLOCAL: &str =

src/parse_execution.rs

@@ -278,10 +278,7 @@ fn handle_command_not_found(
                         ctx,
                         STATUS_NOT_EXECUTABLE,
                         &statement.command,
-                        concat!(
-                            "Unknown command. A component of '%ls' is not a ",
-                            "directory. Check your $PATH."
-                        ),
+                        "Unknown command. A component of '%ls' is not a directory. Check your $PATH.",
                         cmd
                     );
                 } else {