Fix find puts extra cols into record (#9397)

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Trying to fix #9394. 

The problem with PR #9159 seems to be when searching for multiple terms,
each term is checked against the original values. It outputs a new value
for each such check, thus introducing replication for each search term.
As a result, it works fine with num of search term = 1.

crates/nu-command/src/filters/find.rs

@@ -1,3 +1,4 @@
+use itertools::Itertools;
 use nu_cmd_lang::help::highlight_search_string;
 
 use fancy_regex::Regex;
@@ -292,9 +293,9 @@ fn record_matches_regex(values: &[Value], re: &Regex, config: &Config) -> bool {
 #[allow(clippy::too_many_arguments)]
 fn highlight_terms_in_record_with_search_columns(
     search_cols: &Vec<String>,
-    cols: &mut [String],
+    cols: &[String],
-    vals: &mut Vec<Value>,
+    vals: &[Value],
-    span: &mut Span,
+    span: &Span,
     config: &Config,
     terms: &[Value],
     string_style: Style,
@@ -305,38 +306,40 @@ fn highlight_terms_in_record_with_search_columns(
     } else {
         search_cols.to_vec()
     };
-    let mut output = vec![];
+    let term_strs: Vec<_> = terms.iter().map(|v| v.into_string("", config)).collect();
 
-    // We iterate every column in the record and every search term for matches
+    // iterator of Ok((val_str, term_str)) pairs if the value should be highlighted, otherwise Err(val)
-    for (cur_col, val) in cols.iter().zip(vals) {
+    let try_val_highlight = vals.iter().zip(cols).map(|(val, col)| {
         let val_str = val.into_string("", config);
-        for term in terms {
+        let predicate = cols_to_search.contains(col);
-            let term_str = term.into_string("", config);
+        predicate
-            let output_value =
+            .then_some(val_str)
-                if contains_ignore_case(&val_str, &term_str) && cols_to_search.contains(cur_col) {
+            .and_then(|val_str| {
-                    let highlighted_str = match highlight_search_string(
+                term_strs
-                        &val_str,
+                    .iter()
-                        &term_str,
+                    .find(|term_str| contains_ignore_case(&val_str, term_str))
-                        &string_style,
+                    .map(|term_str| (val_str, term_str))
-                        &highlight_style,
+            })
-                    ) {
+            .ok_or_else(|| val.clone())
-                        Ok(highlighted_str) => highlighted_str,
+    });
-                        Err(_) => string_style.paint(term_str).to_string(),
+
-                    };
+    // turn Ok pairs into vals of highlighted strings, Err vals is original vals
+    let new_vals = try_val_highlight
+        .map_ok(|(val_str, term_str)| {
+            let highlighted_str =
+                highlight_search_string(&val_str, term_str, &string_style, &highlight_style)
+                    .unwrap_or_else(|_| string_style.paint(term_str).to_string());
+
             Value::String {
                 val: highlighted_str,
                 span: *span,
             }
-                } else {
+        })
-                    val.clone()
+        .map(|v| v.unwrap_or_else(|v| v));
-                };
-            output.push(output_value);
-        }
-    }
 
     Value::Record {
         cols: cols.to_vec(),
-        vals: output,
+        vals: new_vals.collect(),
         span: *span,
     }
 }

crates/nu-command/tests/commands/find.rs

@@ -94,3 +94,28 @@ fn inverted_find_in_table_keeps_row_if_none_of_the_selected_columns_matches() {
 
     assert_eq!(actual.out, r#"["Maurice"]"#);
 }
+
+#[test]
+fn find_in_table_keeps_row_with_single_matched_and_keeps_other_columns() {
+    let actual = nu!("[[name nickname Age]; [Maurice moe 23] [Laurence larry 67] [William will 18]] | find Maurice");
+
+    println!("{:?}", actual.out);
+    assert!(actual.out.contains("moe"));
+    assert!(actual.out.contains("Maurice"));
+    assert!(actual.out.contains("23"));
+}
+
+#[test]
+fn find_in_table_keeps_row_with_multiple_matched_and_keeps_other_columns() {
+    let actual = nu!("[[name nickname Age]; [Maurice moe 23] [Laurence larry 67] [William will 18] [William bill 60]] | find moe William");
+
+    println!("{:?}", actual.out);
+    assert!(actual.out.contains("moe"));
+    assert!(actual.out.contains("Maurice"));
+    assert!(actual.out.contains("23"));
+    assert!(actual.out.contains("William"));
+    assert!(actual.out.contains("will"));
+    assert!(actual.out.contains("18"));
+    assert!(actual.out.contains("bill"));
+    assert!(actual.out.contains("60"));
+}