Set --no-check-cell if cell is given, but has no parameters

1 files changed, 18 insertions, 13 deletions

diff --git a/libcrystfel/src/index.c b/libcrystfel/src/index.c
index 3e50b664..ed791ff1 100644
--- a/libcrystfel/src/index.c
+++ b/libcrystfel/src/index.c
@@ -300,46 +300,51 @@ IndexingPrivate *setup_indexing(const char *method_list, UnitCell *cell,
 		}
 	}
 
-	if ( cell == NULL ) {
+	/* No cell parameters -> no cell checking, no prior cell */
+	if ( !cell_has_parameters(cell) ) {
 
 		int warn = 0;
 
 		if ( (flags & INDEXING_CHECK_CELL_COMBINATIONS)
 		  || (flags & INDEXING_CHECK_CELL_COMBINATIONS) )
 		{
-			ERROR("WARNING: Forcing --no-cell-combinations "
-			      "and --no-check-cell because you didn't "
-			      "provide a unit cell.\n");
+			ERROR("WARNING: Forcing --no-check-cell because "
+			      "reference unit cell parameters were not "
+			      "given.\n");
 			flags &= ~INDEXING_CHECK_CELL_COMBINATIONS;
 			flags &= ~INDEXING_CHECK_CELL_AXES;
 		}
 
 		for ( i=0; i<n; i++ ) {
-			if ( methods[i] & INDEXING_USE_LATTICE_TYPE ) {
-				methods[i] &= ~INDEXING_USE_LATTICE_TYPE;
+			if ( methods[i] & INDEXING_USE_CELL_PARAMETERS ) {
+				methods[i] &= ~INDEXING_USE_CELL_PARAMETERS;
 				warn = 1;
 			}
 		}
 		if ( warn ) {
 			ERROR("WARNING: Forcing all indexing methods to use "
-			      "\"-nolatt\", because reference Bravais lattice "
-			      "type was not given.\n");
+			      "\"-nocell\", because reference cell parameters "
+			      "were not given.\n");
 		}
 	}
 
-	if ( !cell_has_parameters(cell) ) {
+	/* No cell at all -> no prior lattice type */
+	if ( cell == NULL ) {
+
 		int warn = 0;
+
 		for ( i=0; i<n; i++ ) {
-			if ( methods[i] & INDEXING_USE_CELL_PARAMETERS ) {
-				methods[i] &= ~INDEXING_USE_CELL_PARAMETERS;
+			if ( methods[i] & INDEXING_USE_LATTICE_TYPE ) {
+				methods[i] &= ~INDEXING_USE_LATTICE_TYPE;
 				warn = 1;
 			}
 		}
 		if ( warn ) {
 			ERROR("WARNING: Forcing all indexing methods to use "
-			      "\"-nocell\", because reference cell parameters "
-			      "were not given.\n");
+			      "\"-nolatt\", because reference Bravais lattice "
+			      "type was not given.\n");
 		}
+
 	}
 
 	ipriv = malloc(sizeof(struct _indexingprivate));