Não é possível usar o ponto antes de redirecionar para o arquivo em um arquivo de lote

Question

Não sei dizer por que o contexto de um if mudaria minha capacidade de executar o mesmo código.

Enquanto isso:

@SET FILE_MAIL_BODY=mail.body
@echo The build FAILED because of a lock on the 'classes' folder (or its subfolders).>%FILE_MAIL_BODY%

funciona bem, executando o seguinte snippet:

@SET retval=%ERRORLEVEL%
if %retval% == 1 (
    @SET FILE_MAIL_BODY=mail.body
    @echo The build FAILED because of a lock on the 'classes' folder (or its subfolders).>%FILE_MAIL_BODY%  
)

falha com a mensagem:

. was unexpected at this time.

, a menos que eu exclua o . após subfolders .

    

Answer 1

Você precisa escapar dos caracteres de parêntese de () abertos e fechados no comando ECHO com o caractere ^ circunflexo (veja abaixo), portanto, será: @echo The build FAILED because of a lock on the 'classes' folder ^(or its subfolders^).>%FILE_MAIL_BODY% .

@SET retval=%ERRORLEVEL%
if %retval% == 1 (
    @SET FILE_MAIL_BODY=mail.body
    @echo The build FAILED because of a lock on the 'classes' folder ^(or its subfolders^)^.>%FILE_MAIL_BODY%  
)

Mais recursos

• Alguns caracteres, têm um significado especial para a linha de comando. Eles não podem ser impressos como texto usando o comando ECHO, a menos que tenham escapado usando o símbolo circunflexo:
• SO - Escape de caracteres em lote
• Personagens de fuga

• Caracteres de escape, delimitadores e citações

• Echoing Parentheses in Windows Batch Files

  It’s not just about parentheses, really. It’s about almost anything that a script engine will ruthlessly interpret before executing a command: variable markers (percent signs), redirection symbols, parentheses, double quotes, ampersands…

  My most common… let’s say, case, is this:

  @echo off
  
  echo Doing something (very important)...
  

  Put this in a BATch file, run it, and you’ll end up with a message saying

  ... was unexpected at this time.
  

  No, seriously? It’s great that the engine is trying to evaluate an expression within an echo, but this time I need something much more simple: round brackets embedded into a text message. Just that. Please.

  Thank heavens there is a “cure”: parentheses can be escaped with a caret character.

  @echo off
  
  echo Doing something ^(very important^)...
  

  Now we’re good:

  Doing something (very important)...
  

  Carets can be used to escape almost any special character, even a newline — to break a single command in several lines.

  _source