text/template: can add io.Writer as default argument with name is '&' in the empty?

[mei-rune]

1. What version of Go are you using (go version)?
   go version go1.7rc3 windows/amd64
2. What operating system and processor architecture are you using (go env)?
   set GOARCH=amd64
   set GOBIN=
   set GOEXE=.exe
   set GOHOSTARCH=amd64
   set GOHOSTOS=windows
   set GOOS=windows
   set GOPATH=d:\developing\go\meijing..\3td;d:\developing\go\meijing
   set GORACE=
   set GOROOT=d:\tools\go_amd64
   set GOTOOLDIR=d:\tools\go_amd64\pkg\tool\windows_amd64
   set CC=gcc
   set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0 -fdebug-prefix-map=C:\Users\meifakun\AppData\Local\Temp\go-build810938422=/tmp/go-build -gno-record-gcc-switches
   set CXX=g++
   set CGO_ENABLED=1
3. What did you do?
   Take the simple example from
   https://play.golang.org/p/KMgTlxbI_s
4. What did you expect to see?
   aaaa

[quentinmit]

You are ignoring the error return from template.New. If you actually look at the error, you'll see:

https://play.golang.org/p/NJcVvM9pzL
template: root:1: unexpected "&" in operand

"&" is not a valid expression in the template. AFAICT this is working as intended.

[mei-rune]

replace & with $output ?