new: ``logs`` command has a ``--tail 10`` default parameter.

bin/compose

@@ -2896,6 +2896,12 @@ case "$action" in
         fi
         launch_docker_compose "${compose_opts[@]}" "$action" "${action_opts[@]}" "${action_posargs[@]}" "${remainder_args[@]}"
         ;;
+    logs)
+        if ! array_member action_opts --tail; then  ## force daemon mode for up
+            action_opts+=("--tail" "10")
+        fi
+        launch_docker_compose "${compose_opts[@]}" "$action" "${action_opts[@]}" "${action_posargs[@]}" "${remainder_args[@]}"
+        ;;
     "")
         launch_docker_compose "${compose_opts[@]}"
         ;;

test/test

@@ -1317,8 +1317,8 @@ expected="docker-compose run -T web_site"
 
 cd "$test_tmpdir"
 
-out=\$("$tprog" --dry-compose-run logs -ft web_site 2>&1 >/dev/null)
-expected="docker-compose logs -f -t web_site"
+out=\$("$tprog" --dry-compose-run logs -ft --tail 20 web_site 2>&1 >/dev/null)
+expected="docker-compose logs -f -t --tail 20 web_site"
 
 [ "\$out" == "\$expected" ] || {
     echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
@@ -1380,8 +1380,8 @@ expected_reg="Unknown option '-Z'"
 
 cd "$test_tmpdir"
 
-out=\$("$tprog" --dry-compose-run logs web_site mysql 2>&1 >/dev/null)
-expected="docker-compose logs web_site mysql"
+out=\$("$tprog" --dry-compose-run logs --tail 15 web_site mysql 2>&1 >/dev/null)
+expected="docker-compose logs --tail 15 web_site mysql"
 
 [ "\$out" == "\$expected" ] || {
     echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"