cli: only use default log revset when neither path nor revset is provided

CHANGELOG.md

@@ -22,6 +22,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * The `jj sparse` subcommands now parse and print patterns as workspace-relative
   paths.
 
+* The `jj log` command no longer uses the default revset when a path is specified.
+
 ### New features
 
 * Config now supports rgb hex colors (in the form `#rrggbb`) wherever existing color names are supported.

cli/src/cli_util.rs

@@ -836,7 +836,7 @@ impl WorkspaceCommandHelper {
         self.attach_revset_evaluator(expression)
     }
 
-    fn attach_revset_evaluator(
+    pub fn attach_revset_evaluator(
         &self,
         expression: Rc<RevsetExpression>,
     ) -> Result<RevsetExpressionEvaluator<'_>, CommandError> {

cli/src/commands/log.rs

@@ -38,8 +38,9 @@ use crate::ui::Ui;
 /// rendered as a synthetic node labeled "(elided revisions)".
 #[derive(clap::Args, Clone, Debug)]
 pub(crate) struct LogArgs {
-    /// Which revisions to show. Defaults to the `revsets.log` setting, or
-    /// `@ | ancestors(immutable_heads().., 2) | trunk()` if it is not set.
+    /// Which revisions to show. If no paths nor revisions are specified, this
+    /// defaults to the `revsets.log` setting, or `@ |
+    /// ancestors(immutable_heads().., 2) | trunk()` if it is not set.
     #[arg(long, short)]
     revisions: Vec<RevisionArg>,
     /// Show revisions modifying the given paths
@@ -77,10 +78,14 @@ pub(crate) fn cmd_log(
     let workspace_command = command.workspace_helper(ui)?;
 
     let revset_expression = {
-        let mut expression = if args.revisions.is_empty() {
+        // only use default revset if neither revset nor path are specified
+        let mut expression = if args.revisions.is_empty() && args.paths.is_empty() {
             workspace_command.parse_revset(&command.settings().default_revset())?
-        } else {
+        } else if !args.revisions.is_empty() {
             workspace_command.parse_union_revsets(&args.revisions)?
+        } else {
+            // a path was specified so we use all() and add path filter later
+            workspace_command.attach_revset_evaluator(RevsetExpression::all())?
         };
         if !args.paths.is_empty() {
             let repo_paths: Vec<_> = args
@@ -94,6 +99,7 @@ pub(crate) fn cmd_log(
         }
         expression
     };
+
     let repo = workspace_command.repo();
     let matcher = workspace_command.matcher_from_values(&args.paths)?;
     let revset = revset_expression.evaluate()?;

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

@@ -1029,7 +1029,7 @@ Spans of revisions that are not included in the graph per `--revisions` are rend
 
 ###### **Options:**
 
-* `-r`, `--revisions <REVISIONS>` — Which revisions to show. Defaults to the `revsets.log` setting, or `@ | ancestors(immutable_heads().., 2) | trunk()` if it is not set
+* `-r`, `--revisions <REVISIONS>` — Which revisions to show. If no paths nor revisions are specified, this defaults to the `revsets.log` setting, or `@ | ancestors(immutable_heads().., 2) | trunk()` if it is not set
 * `--reversed` — Show revisions in the opposite order (older revisions first)
 
   Possible values: `true`, `false`

cli/tests/test_log_command.rs

@@ -1001,6 +1001,15 @@ fn test_default_revset() {
             .lines()
             .count()
     );
+
+    // The default revset is not used if a path is specified
+    insta::assert_snapshot!(
+        test_env.jj_cmd_success(&repo_path, &["log", "file1", "-T", "description"]),
+        @r###"
+    @  add a file
+    │
+    ~
+    "###);
 }
 
 #[test]

docs/config.md

@@ -215,7 +215,7 @@ immutable even if the set is empty.
 
 ### Default revisions to log
 
-You can configure the revisions `jj log` without `-r` should show.
+You can configure the revisions `jj log` would show when neither `-r` nor any paths are specified.
 
 ```toml
 # Show commits that are not in `main@origin`