minor bash/pwsh output changes

- bash now uses a heredoc to ensure that cheeky filenames containing linebreaks don't escape the echo string
- powershell rename-item now has the verbose flag that i didn't know existed
- there is now a newline between the error and successful output lines

src/formats.rs

@@ -167,6 +167,12 @@ pub trait Format {
 			}
 		}
 
+		if findings.len() != entries.len() {
+			// if these lengths aren't the same, there was at least one error
+			// add a blank line between the errors and commands
+			smart_write(f, writables![Newline])?;
+		}
+
 		for finding in findings {
 			if let Some(ext) = finding.recommended_extension() {
 				self.rename(f, finding.file.as_path(), &finding.file.with_extension(ext.as_str()))?;
@@ -190,7 +196,7 @@ impl Format for Shell {
 	}
 
 	fn no_known_extension<W: Write>(&self, f: &mut W, path: &Path) -> io::Result<()> {
-		smart_write(f, writablesln!["echo No known extension for ", path])
+		smart_write(f, writablesln!["cat <<- '???'", Newline, "No known extension for ", path, Newline, "???"])
 	}
 
 	fn unreadable<W: Write>(&self, f: &mut W, path: &Path) -> io::Result<()> {
@@ -233,7 +239,7 @@ impl Format for PowerShell {
 		// there doesn't seem to be a way to rename the file, prompting only if the target already exists.
 		smart_write(
 			f,
-			writablesln!["Rename-Item -Path ", from, " -NewName ", (to.file_name().unwrap())],
+			writablesln!["Rename-Item -Verbose -Path ", from, " -NewName ", (to.file_name().unwrap())],
 		)
 	}