Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/1001#discussion_r145575103
--- Diff:
exec/java-exec/src/main/codegen/templates/CastFunctionsSrcVarLenTargetVarLen.java
---
@@ -73,6 +73,9 @@ public void eval() {
out.start = in.start;
if (charCount <= length.value || length.value == 0 ) {
out.end = in.end;
+ if (charCount == (out.end-out.start)) {
+ out.asciiMode = 1; // we can conclude this string is ASCII
--- End diff --
Drill likes spaces around operators: `out.end - out.start`
---
