avoid quoting spaces in git-annex find output to terminal

That's too much quoting, the user expects the filename to be copy and
pasteable. It would be ok to slash-escape space ('\ ')
which is what gnu find does, but it doesn't seem necessary either.

${escaped_file} has always quoted spaces though, so keep on doing it
there.

Sponsored-by: Nicholas Golder-Manning on Patreon

CHANGELOG

@@ -10,7 +10,7 @@ git-annex (10.20230408) UNRELEASED; urgency=medium
     control characters are only filtered out when displaying to the
     terminal.
   * find, findkeys, examinekey: When outputting to a terminal and --format
-    is not used, quote unusual characters.
+    is not used, quote control characters. Output to a pipe is unchanged.
     (Similar to the behavior of GNU find.)
   * addurl --preserve-filename now rejects filenames that contain other
     control characters, besides the escape sequences it already rejected.

Command/Find.hs

@@ -105,7 +105,7 @@ showFormatted (IsTerminal isterminal) format unformatted vars =
 		case format of
 			Nothing -> do
 				liftIO $ S8.putStrLn $ if isterminal
-					then Utility.Format.escapedFormat unformatted
+					then Utility.Format.encode_c (const False) unformatted
 					else unformatted
 			Just formatter -> liftIO $ putStr $
 				Utility.Format.format formatter $

doc/git-annex-examinekey.mdwn

@@ -35,7 +35,7 @@ that can be determined purely by looking at the key.
   Also, '\\n' is a newline, '\\000' is a NULL, etc.
   
   The default output format is the same as `--format='${escapedkey}\\n'`
-  when outputting to the terminal, and otherwise `--format='${key}\\n'`
+  except when outputting to a terminal, control characters will be escaped.
 
 * `--json`
 

doc/git-annex-find.mdwn

@@ -50,8 +50,8 @@ finds files in the current directory and its subdirectories.
 
   Also, '\\n' is a newline, '\\000' is a NULL, etc.
 
-  The default output format is the same as `--format='${escaped_file}\\n'`
-  when outputting to the terminal, and otherwise `--format='${file}\\n'`
+  The default output format is the same as `--format='${file}\\n'`,
+  except when outputting to a terminal, control characters will be escaped.
 
 * `--json`
 

doc/git-annex-findkeys.mdwn

@@ -46,7 +46,7 @@ Outputs a list of keys known to git-annex.
   Also, '\\n' is a newline, '\\000' is a NULL, etc.
 
   The default output format is the same as `--format='${escapedkey}\\n'`
-  when outputting to the terminal, and otherwise `--format='${key}\\n'`
+  except when outputting to a terminal, control characters will be escaped.
 
 * `--json`