parser: use backtick to quote name or expression in error message

I don't have any preference about quoting styles, but it looks weird if an
escaped symbol is surrounded by double quotes.

cli/src/cli_util.rs

@@ -728,7 +728,7 @@ impl AdvanceBookmarksSettings {
                     .into_iter()
                     .map(|s| {
                         StringPattern::parse(&s).map_err(|e| {
-                            config_error_with_message(format!("Error parsing '{s}' for {name}"), e)
+                            config_error_with_message(format!("Error parsing `{s}` for {name}"), e)
                         })
                     })
                     .collect(),
@@ -2875,7 +2875,7 @@ pub fn load_template_aliases(
             if let Err(s) = r {
                 writeln!(
                     ui.warning_default(),
-                    r#"Failed to load "{table_name}.{decl}": {s}"#
+                    "Failed to load `{table_name}.{decl}`: {s}"
                 )?;
             }
         }
@@ -3330,7 +3330,7 @@ fn resolve_aliases(
                     .collect_vec();
                 if resolved_aliases.contains(&*alias_name) {
                     return Err(user_error(format!(
-                        r#"Recursive alias definition involving "{alias_name}""#
+                        "Recursive alias definition involving `{alias_name}`"
                     )));
                 }
                 if let Some(&alias_name) = defined_aliases.get(&*alias_name) {

cli/src/command_error.rs

@@ -217,10 +217,7 @@ fn format_similarity_hint<S: AsRef<str>>(candidates: &[S]) -> Option<String> {
     match candidates {
         [] => None,
         names => {
-            let quoted_names = names
-                .iter()
-                .map(|s| format!(r#""{}""#, s.as_ref()))
-                .join(", ");
+            let quoted_names = names.iter().map(|s| format!("`{}`", s.as_ref())).join(", ");
             Some(format!("Did you mean {quoted_names}?"))
         }
     }
@@ -820,7 +817,7 @@ fn revset_parse_error_hint(err: &RevsetParseError) -> Option<String> {
             op: _,
             similar_op,
             description,
-        } => Some(format!("Did you mean '{similar_op}' for {description}?")),
+        } => Some(format!("Did you mean `{similar_op}` for {description}?")),
         RevsetParseErrorKind::NoSuchFunction {
             name: _,
             candidates,

cli/src/commands/git/mod.rs

@@ -131,7 +131,7 @@ fn write_repository_level_trunk_alias(
     file.save()?;
     writeln!(
         ui.status(),
-        r#"Setting the revset alias "trunk()" to "{branch}@{remote}""#,
+        "Setting the revset alias `trunk()` to `{branch}@{remote}`",
     )?;
     Ok(())
 }

cli/src/revset_util.rs

@@ -194,7 +194,7 @@ pub fn load_revset_aliases(
             if let Err(s) = r {
                 writeln!(
                     ui.warning_default(),
-                    r#"Failed to load "{table_name}.{decl}": {s}"#
+                    "Failed to load `{table_name}.{decl}`: {s}"
                 )?;
             }
         }
@@ -267,7 +267,7 @@ pub(super) fn evaluate_revset_to_single_commit<'a>(
     match (iter.next(), iter.next()) {
         (Some(commit), None) => Ok(commit?),
         (None, _) => Err(user_error(format!(
-            r#"Revset "{revision_str}" didn't resolve to any revisions"#
+            "Revset `{revision_str}` didn't resolve to any revisions"
         ))),
         (Some(commit0), Some(commit1)) => {
             let mut iter = [commit0, commit1].into_iter().chain(iter);
@@ -295,7 +295,7 @@ fn format_multiple_revisions_error(
 ) -> CommandError {
     assert!(commits.len() >= 2);
     let mut cmd_err = user_error(format!(
-        r#"Revset "{revision_str}" resolved to more than one revision"#
+        "Revset `{revision_str}` resolved to more than one revision"
     ));
     let write_commits_summary = |formatter: &mut dyn Formatter| {
         for commit in commits {
@@ -313,7 +313,7 @@ fn format_multiple_revisions_error(
         cmd_err.add_formatted_hint_with(|formatter| {
             writeln!(
                 formatter,
-                r#"The revset "{revision_str}" resolved to these revisions:"#
+                "The revset `{revision_str}` resolved to these revisions:"
             )?;
             write_commits_summary(formatter)
         });
@@ -339,14 +339,14 @@ fn format_multiple_revisions_error(
         cmd_err.add_formatted_hint_with(|formatter| {
             writeln!(
                 formatter,
-                r#"The revset "{revision_str}" resolved to these revisions:"#
+                "The revset `{revision_str}` resolved to these revisions:"
             )?;
             write_commits_summary(formatter)
         });
         if should_hint_about_all_prefix {
             cmd_err.add_hint(format!(
-                "Prefix the expression with 'all:' to allow any number of revisions (i.e. \
-                 'all:{revision_str}')."
+                "Prefix the expression with `all:` to allow any number of revisions (i.e. \
+                 `all:{revision_str}`)."
             ));
         }
     };