manage the special case 'find %A+'

Closes: #451

src/find/matchers/printf.rs

@@ -50,7 +50,11 @@ impl TimeFormat {
                     .to_string()
             }
             TimeFormat::Strftime(format) => {
-                DateTime::<Local>::from(time).format(format).to_string()
+                // Handle a special case
+                let custom_format = format.replace("%+", "%Y-%m-%d+%H:%M:%S%.f0");
+                DateTime::<Local>::from(time)
+                    .format(&custom_format)
+                    .to_string()
             }
         };
 

tests/find_cmd_tests.rs

@@ -10,6 +10,7 @@
 
 use assert_cmd::Command;
 use predicates::prelude::*;
+use regex::Regex;
 use serial_test::serial;
 use std::fs::{self, File};
 use std::io::{Read, Write};
@@ -367,6 +368,27 @@ fn find_printf() {
             ./test_data/simple/subdir/ABBBC subdir/ABBBC f\n",
         )));
 
+    let output = Command::cargo_bin("find")
+        .expect("found binary")
+        .args(["a", "-printf", " %A+"])
+        .assert()
+        .success()
+        .get_output()
+        .stdout
+        .clone();
+
+    let output_str = String::from_utf8(output).expect("Invalid UTF-8 in output");
+
+    println!("Actual output: '{}'", output_str.trim());
+
+    let re = Regex::new(r"^\d{4}-\d{2}-\d{2}\+\d{2}:\d{2}:\d{2}\.\d{9}0$")
+        .expect("Failed to compile regex");
+
+    assert!(
+        re.is_match(&output_str.trim()),
+        "Output did not match expected timestamp format"
+    );
+
     Command::cargo_bin("find")
         .expect("found binary")
         .args([