scripts/functions: fix debug-shell

Properly catch resuming the build when continuing past the
failed command.

The 'case ;;&' construct is a bash4ism. Get rid of it.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
(transplanted from 2af20cfd210bac338ec18d774458c84fd585ef07)

scripts/functions

@@ -71,16 +71,15 @@ CT_OnError() {
                                 printf "\nRe-trying last command.\n\n"
                                 break
                             fi
-                            ;;&
-                        3)  break;;
-                        *)  printf "\nPlease exit with one of these values:\n"
-                            printf "    1  fixed, continue with next build command\n"
-                            if [ -n "${cur_cmd}" ]; then
-                                printf "    2  repeat this build command\n"
-                            fi
-                            printf "    3  abort build\n"
                             ;;
+                        3)  break;;
                     esac
+                    printf "\nPlease exit with one of these values:\n"
+                    printf "    1  fixed, continue with next build command\n"
+                    if [ -n "${cur_cmd}" ]; then
+                        printf "    2  repeat this build command\n"
+                    fi
+                    printf "    3  abort build\n"
                 done
                 exit $result
             )
@@ -88,7 +87,7 @@ CT_OnError() {
             # Restore the trap handler
             eval "${old_trap}"
             case "${result}" in
-                1)  rm -f "${CT_WORK_DIR}/backtrace"; return;;
+                1)  rm -f "${CT_WORK_DIR}/backtrace"; touch "${CT_BUILD_DIR}/skip"; return;;
                 2)  rm -f "${CT_WORK_DIR}/backtrace"; touch "${CT_BUILD_DIR}/repeat"; return;;
                 # 3 is an abort, continue...
             esac
@@ -258,7 +257,12 @@ CT_DoExecLog() {
         "${@}" 2>&1 |CT_DoLog "${level}"
         ret="${?}"
         if [ -f "${CT_BUILD_DIR}/repeat" ]; then
+            rm -f "${CT_BUILD_DIR}/repeat"
             continue
+        elif [ -f "${CT_BUILD_DIR}/skip" ]; then
+            rm -f "${CT_BUILD_DIR}/skip"
+            ret=0
+            break
         else
             break
         fi