Bug 546284: [Ltx-Editor] Fix content assist for env names and ref labels
when preceded by a space

Change-Id: Ia19c25722358016a281616c959334a0cc88200b4
diff --git a/docmlet/org.eclipse.statet.docmlet.tex.ui/src/org/eclipse/statet/internal/docmlet/tex/ui/editors/LtxElementCompletionComputer.java b/docmlet/org.eclipse.statet.docmlet.tex.ui/src/org/eclipse/statet/internal/docmlet/tex/ui/editors/LtxElementCompletionComputer.java
index ef6e76e..f32bedc 100644
--- a/docmlet/org.eclipse.statet.docmlet.tex.ui/src/org/eclipse/statet/internal/docmlet/tex/ui/editors/LtxElementCompletionComputer.java
+++ b/docmlet/org.eclipse.statet.docmlet.tex.ui/src/org/eclipse/statet/internal/docmlet/tex/ui/editors/LtxElementCompletionComputer.java
@@ -177,7 +177,7 @@
 				final int offset= texContext.getInvocationOffset() - prefix.length();
 				final TextRegion region= TexAst.getInnerRegion(argNode);
 				if (region != null
-						&& region.getStartOffset() >= offset && offset <= region.getEndOffset() ) {
+						&& region.getStartOffset() <= offset && offset <= region.getEndOffset() ) {
 					if (argIdx == 0
 							&& ((command.getType() & TexCommand.MASK_MAIN) == TexCommand.GENERICENV
 									|| (command.getType() & TexCommand.MASK_MAIN) == TexCommand.ENV )) {