[gentoo-dev] [PATCH 1/4] multibuild: print only 'public' part of command-line.

["Michał Górny" <mgorny@gentoo.org>]

Shift the unnecessary 'private' commands from the printed commands when
executing.

That is:

	python_parallel_foreach_impl foo

will print:

	* pythonX.Y: foo

rather than:

	* pythonX.Y: _multibuild_parallel _python_multibuild_wrapper ...
---
 gx86/eclass/multibuild.eclass | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/gx86/eclass/multibuild.eclass b/gx86/eclass/multibuild.eclass
index 1c9058a..1cc33a9 100644
--- a/gx86/eclass/multibuild.eclass
+++ b/gx86/eclass/multibuild.eclass
@@ -118,12 +118,23 @@ multibuild_foreach_variant() {
 		# redirect_alloc_fd accepts files only. so we need to open
 		# a random file and then reuse the fd for logger process.
 		redirect_alloc_fd log_fd /dev/null
+
+		_multibuild_run() {
+			# find the first non-private command
+			local i=1
+			while [[ ${!i} == _* ]]; do
+				(( i += 1 ))
+			done
+
+			einfo "${v}: running ${@:${i}}"
+			"${@}"
+		}
+
 		# bash can't handle ${log_fd} in redirections,
 		# we need to use eval to pass fd numbers directly.
 		eval "
 			exec ${log_fd}> >(exec tee -a \"\${T}/build-\${MULTIBUILD_ID}.log\")
-			einfo \"\${v}: running \${@}\" >&${log_fd} 2>&1
-			\"\${@}\" >&${log_fd} 2>&1
+			_multibuild_run \"\${@}\" >&${log_fd} 2>&1
 			lret=\${?}
 			exec ${log_fd}>&-
 		"
-- 
1.8.1.4