请参阅以下示例（在从 https://github.com/llvm-mirror/llvm 克隆的LLVM源代码树中）。为什么有时打印文件名，有时不打印？谢谢。
llvm$ git blame -e ./include/llvm/IR/Instruction.h
3a8b0f00e6d2 include/llvm/Instruction.h (<sabre@nondot.org> 2002-09-10 15:36:11 +0000 1) //===-- llvm/Instruction.h - Instruction class definition -------*- C++ -*-===//
9769ab22265b include/llvm/Instruction.h (<brukman+llvm@gmail.com> 2005-04-21 20:19:05 +0000 2) //
6fbcc26f1460 include/llvm/Instruction.h (<criswell@uiuc.edu> 2003-10-20 20:19:47 +0000 3) // The LLVM Compiler Infrastructure
llvm$ git blame -e ./lib/Transforms/Hello/Hello.cpp | head -n 3
180e568a7058 (<sabre@nondot.org> 2002-08-08 20:10:38 +0000 1) //===- Hello.cpp - Example code from "Writing an LLVM Pass" ---------------===//
fd93908ae8b9 (<brukman+llvm@gmail.com> 2005-04-21 23:48:37 +0000 2) //
b576c94c15af (<criswell@uiuc.edu> 2003-10-20 19:43:21 +0000 3) // The LLVM Compiler Infrastructure
添加-f（或--showname）选项以确保始终在git blame中看到文件名。
> git blame --show-name -e ./lib/Transforms/Hello/Hello.cpp | head -3
180e568a7058 lib/Transforms/Hello/Hello.cpp (<sabre@nondot.org> 2002-08-08 20:10:38 +0000 1) //===- Hello.cpp - Example code from "Writing an LLVM Pass" ---------------===//
fd93908ae8b9 lib/Transforms/Hello/Hello.cpp (<brukman+llvm@gmail.com> 2005-04-21 23:48:37 +0000 2) //
b576c94c15af lib/Transforms/Hello/Hello.cpp (<criswell@uiuc.edu> 2003-10-20 19:43:21 +0000 3) // The LLVM Compiler Infrastructure
如该选项所述：
默认情况下，如果由于重命名检测，有任何行来自具有不同名称的文件，则会显示文件名。
Instruction.h一定是这样，而不是Hello.cpp。