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-rwxr-xr-xcontrib/subtree/git-subtree.sh22
1 files changed, 21 insertions, 1 deletions
diff --git a/contrib/subtree/git-subtree.sh b/contrib/subtree/git-subtree.sh
index 441571c..53a1a02 100755
--- a/contrib/subtree/git-subtree.sh
+++ b/contrib/subtree/git-subtree.sh
@@ -67,7 +67,27 @@ debug () {
progress () {
if test -z "$GIT_QUIET"
then
- printf "%s\r" "$*" >&2
+ if test -z "$arg_debug"
+ then
+ # Debug mode is off.
+ #
+ # Print one progress line that we keep updating (use
+ # "\r" to return to the beginning of the line, rather
+ # than "\n" to start a new line). This only really
+ # works when stderr is a terminal.
+ printf "%s\r" "$*" >&2
+ else
+ # Debug mode is on. The `debug` function is regularly
+ # printing to stderr.
+ #
+ # Don't do the one-line-with-"\r" thing, because on a
+ # terminal the debug output would overwrite and hide the
+ # progress output. Add a "progress:" prefix to make the
+ # progress output and the debug output easy to
+ # distinguish. This ensures maximum readability whether
+ # stderr is a terminal or a file.
+ printf "progress: %s\n" "$*" >&2
+ fi
fi
}