Use file-modified-label consistently.

When filtering a diff and when directly diffing files/dirs, use the
modified label that is output when interpreting git diffs.  This gets
rid of the "comparing:" prefix (which was otherwise missing from the
--navigate regex) and ensures that a direct diff has a label to stop at
when --navigate is enabled.  One of the unified-diff tests now uses
--file-modified-label=comparing: to generate the same output as before,
while the other now uses --navigate to get a delta char label.

2 files changed, 20 insertions, 16 deletions

diff --git a/src/handlers/file_meta.rs b/src/handlers/file_meta.rs
index 82109a91..d58eb9dd 100644
--- a/src/handlers/file_meta.rs
+++ b/src/handlers/file_meta.rs
@@ -304,16 +304,21 @@ pub fn get_file_change_description_from_file_paths(
     plus_file_event: &FileEvent,
     config: &Config,
 ) -> String {
+    let format_label = |label: &str| {
+        if !label.is_empty() {
+            format!("{} ", label)
+        } else {
+            "".to_string()
+        }
+    };
     if comparing {
-        format!("comparing: {} ⟶   {}", minus_file, plus_file)
+        format!(
+            "{}{} ⟶   {}",
+            format_label(&config.file_modified_label),
+            minus_file,
+            plus_file
+        )
     } else {
-        let format_label = |label: &str| {
-            if !label.is_empty() {
-                format!("{} ", label)
-            } else {
-                "".to_string()
-            }
-        };
         let format_file = |file| {
             if config.hyperlinks {
                 features::hyperlinks::format_osc8_file_hyperlink(file, None, file, config)
@@ -356,7 +361,7 @@ pub fn get_file_change_description_from_file_paths(
                 format_label(match file_event {
                     FileEvent::Rename => &config.file_renamed_label,
                     FileEvent::Copy => &config.file_copied_label,
-                    _ => "",
+                    _ => &config.file_modified_label,
                 }),
                 format_file(minus_file),
                 format_file(plus_file)
diff --git a/src/tests/test_example_diffs.rs b/src/tests/test_example_diffs.rs
index dda5bcf6..a6d5f497 100644
--- a/src/tests/test_example_diffs.rs
+++ b/src/tests/test_example_diffs.rs
@@ -110,7 +110,8 @@ mod tests {
 
     #[test]
     fn test_diff_unified_two_files() {
-        let config = integration_test_utils::make_config_from_args(&[]);
+        let config =
+            integration_test_utils::make_config_from_args(&["--file-modified-label", "comparing:"]);
         let output = integration_test_utils::run_delta(DIFF_UNIFIED_TWO_FILES, &config);
         let output = strip_ansi_codes(&output);
         let mut lines = output.lines();
@@ -125,16 +126,14 @@ mod tests {
 
     #[test]
     fn test_diff_unified_two_directories() {
-        let config = integration_test_utils::make_config_from_args(&["--width", "80"]);
+        let config =
+            integration_test_utils::make_config_from_args(&["--width", "80", "--navigate"]);
         let output = integration_test_utils::run_delta(DIFF_UNIFIED_TWO_DIRECTORIES, &config);
         let output = strip_ansi_codes(&output);
         let mut lines = output.lines();
 
         // Header
-        assert_eq!(
-            lines.nth(1).unwrap(),
-            "comparing: a/different ⟶   b/different"
-        );
+        assert_eq!(lines.nth(1).unwrap(), "Δ a/different ⟶   b/different");
         // Change
         assert_eq!(lines.nth(7).unwrap(), "This is different from b");
         // File uniqueness
@@ -144,7 +143,7 @@ mod tests {
         // Next hunk
         assert_eq!(
             lines.nth(4).unwrap(),
-            "comparing: a/more_difference ⟶   b/more_difference"
+            "Δ a/more_difference ⟶   b/more_difference"
         );
     }