cli: abandon, describe: parse -rREV option properly

I often do "jj log -rREV" to preview the commits to abandon, and it's annoying
that I have to remove -r or insert space to "jj abandon ..".

The implementation is basically the same as b0c7d0a.

cli/src/commands/abandon.rs

@@ -36,19 +36,17 @@ use crate::ui::Ui;
 /// commit. This is true in general; it is not specific to this command.
 #[derive(clap::Args, Clone, Debug)]
 pub(crate) struct AbandonArgs {
-    /// The revision(s) to abandon
+    /// The revision(s) to abandon (default: @)
     #[arg(
-        default_value = "@",
         value_name = "REVSETS",
         add = ArgValueCandidates::new(complete::mutable_revisions)
     )]
-    revisions: Vec<RevisionArg>,
+    revisions_pos: Vec<RevisionArg>,
+    #[arg(short = 'r', hide = true, value_name = "REVSETS")]
+    revisions_opt: Vec<RevisionArg>,
     /// Do not print every abandoned commit on a separate line
     #[arg(long, short)]
     summary: bool,
-    /// Ignored (but lets you pass `-r` for consistency with other commands)
-    #[arg(short = 'r', hide = true, action = clap::ArgAction::Count)]
-    unused_revision: u8,
     /// Do not modify the content of the children of the abandoned commits
     #[arg(long)]
     restore_descendants: bool,
@@ -61,10 +59,14 @@ pub(crate) fn cmd_abandon(
     args: &AbandonArgs,
 ) -> Result<(), CommandError> {
     let mut workspace_command = command.workspace_helper(ui)?;
-    let to_abandon: Vec<_> = workspace_command
-        .parse_union_revsets(ui, &args.revisions)?
-        .evaluate_to_commits()?
-        .try_collect()?;
+    let to_abandon: Vec<_> = if !args.revisions_pos.is_empty() || !args.revisions_opt.is_empty() {
+        workspace_command
+            .parse_union_revsets(ui, &[&*args.revisions_pos, &*args.revisions_opt].concat())?
+    } else {
+        workspace_command.parse_revset(ui, &RevisionArg::AT)?
+    }
+    .evaluate_to_commits()?
+    .try_collect()?;
     if to_abandon.is_empty() {
         writeln!(ui.status(), "No revisions to abandon.")?;
         return Ok(());

cli/src/commands/describe.rs

@@ -43,16 +43,14 @@ use crate::ui::Ui;
 #[derive(clap::Args, Clone, Debug)]
 #[command(visible_aliases = &["desc"])]
 pub(crate) struct DescribeArgs {
-    /// The revision(s) whose description to edit
+    /// The revision(s) whose description to edit (default: @)
     #[arg(
-        default_value = "@",
         value_name = "REVSETS",
         add = ArgValueCandidates::new(complete::mutable_revisions)
     )]
-    revisions: Vec<RevisionArg>,
-    /// Ignored (but lets you pass `-r` for consistency with other commands)
-    #[arg(short = 'r', hide = true, action = clap::ArgAction::Count)]
-    unused_revision: u8,
+    revisions_pos: Vec<RevisionArg>,
+    #[arg(short = 'r', hide = true, value_name = "REVSETS")]
+    revisions_opt: Vec<RevisionArg>,
     /// The change description to use (don't open editor)
     ///
     /// If multiple revisions are specified, the same description will be used
@@ -99,10 +97,14 @@ pub(crate) fn cmd_describe(
     args: &DescribeArgs,
 ) -> Result<(), CommandError> {
     let mut workspace_command = command.workspace_helper(ui)?;
-    let commits: Vec<_> = workspace_command
-        .parse_union_revsets(ui, &args.revisions)?
-        .evaluate_to_commits()?
-        .try_collect()?; // in reverse topological order
+    let commits: Vec<_> = if !args.revisions_pos.is_empty() || !args.revisions_opt.is_empty() {
+        workspace_command
+            .parse_union_revsets(ui, &[&*args.revisions_pos, &*args.revisions_opt].concat())?
+    } else {
+        workspace_command.parse_revset(ui, &RevisionArg::AT)?
+    }
+    .evaluate_to_commits()?
+    .try_collect()?; // in reverse topological order
     if commits.is_empty() {
         writeln!(ui.status(), "No revisions to describe.")?;
         return Ok(());

cli/tests/cli-reference@.md.snap

@@ -214,9 +214,7 @@ If a working-copy commit gets abandoned, it will be given a new, empty commit. T
 
 ###### **Arguments:**
 
-* `<REVSETS>` — The revision(s) to abandon
-
-  Default value: `@`
+* `<REVSETS>` — The revision(s) to abandon (default: @)
 
 ###### **Options:**
 
@@ -650,9 +648,7 @@ Starts an editor to let you edit the description of changes. The editor will be
 
 ###### **Arguments:**
 
-* `<REVSETS>` — The revision(s) whose description to edit
-
-  Default value: `@`
+* `<REVSETS>` — The revision(s) whose description to edit (default: @)
 
 ###### **Options:**
 

cli/tests/test_abandon_command.rs

@@ -120,7 +120,7 @@ fn test_basics() {
 
     // Test abandoning the same commit twice directly
     test_env.jj_cmd_ok(&repo_path, &["undo"]);
-    let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["abandon", "b", "b"]);
+    let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["abandon", "-rb", "b"]);
     insta::assert_snapshot!(stdout, @"");
     insta::assert_snapshot!(stderr, @r###"
     Abandoned commit zsuskuln 1394f625 b | b
@@ -377,10 +377,8 @@ fn test_abandon_restore_descendants() {
     std::fs::write(repo_path.join("file"), "baz\n").unwrap();
 
     // Remove the commit containing "bar"
-    let (stdout, stderr) = test_env.jj_cmd_ok(
-        &repo_path,
-        &["abandon", "-r", "@-", "--restore-descendants"],
-    );
+    let (stdout, stderr) =
+        test_env.jj_cmd_ok(&repo_path, &["abandon", "-r@-", "--restore-descendants"]);
     insta::assert_snapshot!(stdout, @"");
     insta::assert_snapshot!(stderr, @r#"
     Abandoned commit rlvkpnrz 225adef1 (no description set)

cli/tests/test_describe_command.rs

@@ -204,7 +204,7 @@ fn test_describe_multiple_commits() {
     // Set the description of multiple commits using `-m` flag
     let (stdout, stderr) = test_env.jj_cmd_ok(
         &repo_path,
-        &["describe", "@", "@--", "-m", "description from CLI"],
+        &["describe", "-r@", "-r@--", "-m", "description from CLI"],
     );
     insta::assert_snapshot!(stdout, @"");
     insta::assert_snapshot!(stderr, @r###"
@@ -224,7 +224,7 @@ fn test_describe_multiple_commits() {
     // each commit and doesn't update commits if no changes are made.
     // Commit descriptions are edited in topological order
     std::fs::write(&edit_script, "dump editor0").unwrap();
-    let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["describe", "@", "@-"]);
+    let (stdout, stderr) = test_env.jj_cmd_ok(&repo_path, &["describe", "-r@", "@-"]);
     insta::assert_snapshot!(stdout, @"");
     insta::assert_snapshot!(stderr, @r###"
     Nothing changed.