mbe: Restructure `macro_metavar_expr` tests

These tests have expanded beyond the RFC, so rename the directory
`rfc-3086-metavar-expr` to `metavar-expressions`. `concat` (which wasn't
part of the RFC) now fits in this group, so merge its tests into the
`metavar-expressions` directory.

Additionally rename some related `issue-*` tests.

1 files changed, 0 insertions, 168 deletions

diff --git a/tests/ui/macros/macro-metavar-expr-concat/syntax-errors.rs b/tests/ui/macros/macro-metavar-expr-concat/syntax-errors.rs
deleted file mode 100644
index 7673bd3200f..00000000000
--- a/tests/ui/macros/macro-metavar-expr-concat/syntax-errors.rs
+++ /dev/null
@@ -1,168 +0,0 @@
-#![feature(macro_metavar_expr_concat)]
-
-macro_rules! wrong_concat_declarations {
-    ($ex:expr) => {
-        ${concat()}
-        //~^ ERROR expected identifier
-
-        ${concat(aaaa)}
-        //~^ ERROR `concat` must have at least two elements
-
-        ${concat(aaaa,)}
-        //~^ ERROR expected identifier
-
-        ${concat(_, aaaa)}
-
-        ${concat(aaaa aaaa)}
-        //~^ ERROR expected comma
-
-        ${concat($ex)}
-        //~^ ERROR `concat` must have at least two elements
-
-        ${concat($ex, aaaa)}
-        //~^ ERROR metavariables of `${concat(..)}` must be of type
-
-        ${concat($ex, aaaa 123)}
-        //~^ ERROR expected comma
-
-        ${concat($ex, aaaa,)}
-        //~^ ERROR expected identifier
-    };
-}
-
-macro_rules! dollar_sign_without_referenced_ident {
-    ($ident:ident) => {
-        const ${concat(FOO, $foo)}: i32 = 2;
-        //~^ ERROR variable `foo` is not recognized in meta-variable expression
-    };
-}
-
-macro_rules! starting_number {
-    ($ident:ident) => {{
-        let ${concat("1", $ident)}: () = ();
-        //~^ ERROR `${concat(..)}` is not generating a valid identifier
-    }};
-}
-
-macro_rules! starting_valid_unicode {
-    ($ident:ident) => {{
-        let ${concat("Ý", $ident)}: () = ();
-    }};
-}
-
-macro_rules! starting_invalid_unicode {
-    ($ident:ident) => {{
-        let ${concat("\u{00BD}", $ident)}: () = ();
-        //~^ ERROR `${concat(..)}` is not generating a valid identifier
-    }};
-}
-
-macro_rules! ending_number {
-    ($ident:ident) => {{
-        let ${concat($ident, "1")}: () = ();
-    }};
-}
-
-macro_rules! ending_valid_unicode {
-    ($ident:ident) => {{
-        let ${concat($ident, "Ý")}: () = ();
-    }};
-}
-
-macro_rules! ending_invalid_unicode {
-    ($ident:ident) => {{
-        let ${concat($ident, "\u{00BD}")}: () = ();
-        //~^ ERROR `${concat(..)}` is not generating a valid identifier
-    }};
-}
-
-macro_rules! empty {
-    () => {{
-        let ${concat("", "")}: () = ();
-        //~^ ERROR `${concat(..)}` is not generating a valid identifier
-    }};
-}
-
-macro_rules! unsupported_literals {
-    ($ident:ident) => {{
-        let ${concat(_a, 'b')}: () = ();
-        //~^ ERROR expected identifier or string literal
-        //~| ERROR expected pattern
-        let ${concat(_a, 1)}: () = ();
-        //~^ ERROR expected identifier or string literal
-
-        let ${concat($ident, 'b')}: () = ();
-        //~^ ERROR expected identifier or string literal
-        let ${concat($ident, 1)}: () = ();
-        //~^ ERROR expected identifier or string literal
-    }};
-}
-
-macro_rules! bad_literal_string {
-    ($literal:literal) => {
-        const ${concat(_foo, $literal)}: () = ();
-        //~^ ERROR `${concat(..)}` is not generating a valid identifier
-        //~| ERROR `${concat(..)}` is not generating a valid identifier
-        //~| ERROR `${concat(..)}` is not generating a valid identifier
-        //~| ERROR `${concat(..)}` is not generating a valid identifier
-        //~| ERROR `${concat(..)}` is not generating a valid identifier
-        //~| ERROR `${concat(..)}` is not generating a valid identifier
-        //~| ERROR `${concat(..)}` is not generating a valid identifier
-    }
-}
-
-macro_rules! bad_literal_non_string {
-    ($literal:literal) => {
-        const ${concat(_foo, $literal)}: () = ();
-        //~^ ERROR metavariables of `${concat(..)}` must be of type
-        //~| ERROR metavariables of `${concat(..)}` must be of type
-        //~| ERROR metavariables of `${concat(..)}` must be of type
-        //~| ERROR metavariables of `${concat(..)}` must be of type
-        //~| ERROR metavariables of `${concat(..)}` must be of type
-    }
-}
-
-macro_rules! bad_tt_literal {
-    ($tt:tt) => {
-        const ${concat(_foo, $tt)}: () = ();
-        //~^ ERROR metavariables of `${concat(..)}` must be of type
-        //~| ERROR metavariables of `${concat(..)}` must be of type
-        //~| ERROR metavariables of `${concat(..)}` must be of type
-    }
-}
-
-fn main() {
-    wrong_concat_declarations!(1);
-
-    dollar_sign_without_referenced_ident!(VAR);
-
-    starting_number!(_abc);
-    starting_valid_unicode!(_abc);
-    starting_invalid_unicode!(_abc);
-
-    ending_number!(_abc);
-    ending_valid_unicode!(_abc);
-    ending_invalid_unicode!(_abc);
-    unsupported_literals!(_abc);
-
-    empty!();
-
-    bad_literal_string!("\u{00BD}");
-    bad_literal_string!("\x41");
-    bad_literal_string!("🤷");
-    bad_literal_string!("d[-_-]b");
-
-    bad_literal_string!("-1");
-    bad_literal_string!("1.0");
-    bad_literal_string!("'1'");
-
-    bad_literal_non_string!(1);
-    bad_literal_non_string!(-1);
-    bad_literal_non_string!(1.0);
-    bad_literal_non_string!('1');
-    bad_literal_non_string!(false);
-
-    bad_tt_literal!(1);
-    bad_tt_literal!(1.0);
-    bad_tt_literal!('1');
-}