Fix auto bool detection (#980)

Author: quinnj

src/utils.jl

@@ -513,7 +513,7 @@ end
     end
     bool = Parsers.xparse(Bool, buf, pos, len, opts)
     code, tlen = bool.code, bool.tlen
-    if Parsers.ok(code) && (ensure_full_buf_consumed == ((pos + tlen - 1) == len))
+    if Parsers.ok(code) && (!ensure_full_buf_consumed || (ensure_full_buf_consumed == ((pos + tlen - 1) == len)))
         return cb(code, tlen, bool.val, BOOL)
     end
     return cb(code, tlen, nothing, STRING)

test/basics.jl

@@ -773,4 +773,8 @@ f = CSV.File(IOBuffer(data); delim='|', stripwhitespace=true)
 f = CSV.File(IOBuffer(join((rand(("a,$(rand())", "b,$(rand())")) for _ = 1:10^6), "\n")), header=false, limit=10000)
 @test length(f) == 10000
 
+# fix bool detection
+f = CSV.File(IOBuffer("a\nfalse\n"))
+@test eltype(f.a) == Bool
+
 end