feat: Support '-F' as an alias for '--features'

This decision was part of rust-lang#10472

-  It looks like all commands except `cargo-add` are using the prelude to
  define `--features`, so this should hit them all.
- I've updated completions to the best of my knowledge.
- It appears we don't need to update man pages or other documentation.
- I'm assuming we don't add tests for every sort flag but rely on clap
  to have coverage to ensure it works.

Author: epage

src/cargo/util/command_prelude.rs

@@ -132,11 +132,14 @@ pub trait AppExt: Sized {
     }
 
     fn arg_features(self) -> Self {
-        self._arg(multi_opt(
-            "features",
-            "FEATURES",
-            "Space or comma separated list of features to activate",
-        ))
+        self._arg(
+            multi_opt(
+                "features",
+                "FEATURES",
+                "Space or comma separated list of features to activate",
+            )
+            .short('F'),
+        )
         ._arg(opt("all-features", "Activate all available features"))
         ._arg(opt(
             "no-default-features",

src/etc/_cargo

@@ -51,8 +51,8 @@ _cargo() {
     )
 
     features=(
-        '(--all-features)--features=[specify features to activate]:feature'
-        '(--features)--all-features[activate all available features]'
+        '(--all-features)'{-F+,--features=}'[specify features to activate]:feature'
+        '(--features -F)--all-features[activate all available features]'
         "--no-default-features[don't build the default features]"
     )
 

src/etc/cargo.bashcomp.sh

@@ -39,7 +39,7 @@ _cargo()
 	local opt_common="$opt_help $opt_verbose $opt_quiet $opt_color"
 	local opt_pkg_spec='-p --package --all --exclude --workspace'
 	local opt_pkg='-p --package'
-	local opt_feat='--features --all-features --no-default-features'
+	local opt_feat='-F --features --all-features --no-default-features'
 	local opt_mani='--manifest-path'
 	local opt_parallel='-j --jobs --keep-going'
 	local opt_force='-f --force'