libspec.lib: Correctly parse lines containing more complex 'obsoletes' directives

Signed-off-by: Davide Madrisan <davide.madrisan@gmail.com>

ChangeLog

@@ -36,8 +36,9 @@ Changes in version 1.9.1
 
 + bugfix
   * lib/libspec.lib - Davide Madrisan:
-    Workaround the problem of lines containing an 'Obsoletes' followed by a '<='
-    (or similar) operator.
+    Correctly parse lines containing more complex 'obsoletes' directives, like
+    the following one:
+       Obsoletes: pck1 <= <v1>[,] pck2 > <v2>
     (Bug discovered by Silvan Calarco)
 
 --------------------------------------------------------------------------------

lib/libspec.lib.in

@@ -1087,16 +1087,26 @@ rpmvars.solve "$filesname" "$specfile")" )
                continue
             fi
 
-            case ${tok[0]} in
+            local currtok skiptok=0
+            case "${tok[0]}" in
             Obsoletes|Obsoletes:)
                unset tok[0]
                notify.debug "\
 $FUNCNAME: * entry found at line $linenum: \"${tok[*]}\""
-               SPEC_OBSOLETES[${#SPEC_OBSOLETES[*]}]="\"\
-$(rpmvars.solve "${tok[*]}" "$specfile")\""
-
-               notify.debug "\
+               # NOTE: accept lines like: Obsoletes: pck1 <= 1, pck2 > 2
+               for currtok in ${tok[*]}; do
+                  [ $skiptok -gt 0 ] &&
+                   { skiptok="$(($skiptok-1))"; continue; }
+                  case "$currtok" in
+                     "<"|">"|"<="|">=")
+                        skiptok="1"; continue ;;
+                     ",") skiptok="0"; continue ;;
+                  esac
+                  tok_pck="$(rpmvars.solve "$currtok" "$specfile")"
+                  SPEC_OBSOLETES[${#SPEC_OBSOLETES[*]}]="\"$currtok\""
+                  notify.debug "\
 $FUNCNAME: SPEC_OBSOLETES = ( ${SPEC_OBSOLETES[*]} )"
+               done
             ;;
             esac
          done < $specfile