add basic progress

doc/tips/automatically_adding_metadata/pre-commit-annex

@@ -52,6 +52,7 @@ IFS="
 
 process () {
 	if [ -e "$f" ]; then
+		echo "adding metadata for $f"
 		for l in $(extract "$f" | egrep "$want"); do
 			field="${l%% - *}"
 			value="${l#* - }"

doc/todo/git-annex_metadata_extractor_progress_bar.mdwn

@@ -1,3 +1,7 @@
 it can take a significant amount of time for the [[automatic metadata script|tips/automatically_adding_metadata/]] to run on commit. it would be nice to have some progress, otherwise it just looks like the command is hanging.
 
 here it's been processing my photos for more than three hours, and it's probably not even halfway done, according to ps... [[anarcat]]
+
+> Well, I added an echo of each file as it's processed. More complex
+> progress could be done, patches accepted. But I suppose a file list is
+> good enough; it's good enough for git-annex itself. [[done]] --[[Joey]]