user: What would the C source look like for the assembly code provided here?

```asm
<refscpy>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x68,%rsp
  mov    %rdi,%r13
  mov    %esi,%r12d
  mov    %rdx,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  jmp    L51
L73:
  movzbl (%rbx),%eax
  cmp    $0x3c,%al
  je     L32
  sub    $0x1,%r12d
  test   %r12d,%r12d
  jle    L149
  mov    %r13,%rax
  lea    0x1(%rax),%r13
  movb   $0x3c,(%rax)
  mov    $0x0,%r14d
  mov    %r14,%rcx
  mov    %rbx,%r15
  jmp    L120
L219:
  movzbl (%rbx),%eax
  cmp    $0x2e,%al
  jne    L168
  mov    %rbx,%r14
  jmp    L90
L168:
  movzbl (%rbx),%eax
  cmp    $0x40,%al
  jne    L90
  mov    %rbx,%rcx
L90:
  sub    $0x1,%r12d
  test   %r12d,%r12d
  jle    L119
  mov    %rbx,%rdx
  lea    0x1(%rdx),%rbx
  mov    %r13,%rax
  lea    0x1(%rax),%r13
  movzbl (%rdx),%edx
  mov    %dl,(%rax)
L120:
  movzbl (%rbx),%eax
  test   %al,%al
  je     L137
  movzbl (%rbx),%eax
  cmp    $0x20,%al
  je     L137
  movzbl (%rbx),%eax
  cmp    $0x2c,%al
  jne    L219
  jmp    L137
L119:
  nop
L137:
  test   %r12d,%r12d
  jle    L0
  test   %r14,%r14
  je     L24
  mov    %rcx,%rax
  test   %rax,%rax
  jne    L24
  mov    %r14,%rax
  lea    0x1(%rax),%r14
  movb   $0x0,(%rax)
  movzbl (%rax),%eax
  mov    %al,0x0(%r13)
  lea    -0x80(%rbp),%rax
  mov    %r15,%rcx
  mov    %r14,%rdx
  lea    D9(%rip),%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <sprintf@plt>
  lea    -0x80(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x84(%rbp)
  cmp    -0x84(%rbp),%r12d
  jle    L24
  lea    -0x80(%rbp),%rax
  mov    %rax,%rsi
  mov    %r13,%rdi
  call   <strcpy@plt>
  mov    -0x84(%rbp),%eax
  cltq
  add    %rax,%r13
  sub    -0x84(%rbp),%r12d
L24:
  sub    $0x1,%r12d
  test   %r12d,%r12d
  jle    L46
  mov    %r13,%rax
  lea    0x1(%rax),%r13
  movb   $0x3e,(%rax)
  jmp    L232
L32:
  nop
L179:
  movzbl (%rbx),%eax
  test   %al,%al
  je     L223
  sub    $0x1,%r12d
  test   %r12d,%r12d
  jle    L223
  mov    %rbx,%rdx
  lea    0x1(%rdx),%rbx
  mov    %r13,%rax
  lea    0x1(%rax),%r13
  movzbl (%rdx),%edx
  mov    %dl,(%rax)
  movzbl (%rax),%eax
  cmp    $0x3e,%al
  jne    L179
L223:
  test   %r12d,%r12d
  jle    L121
  jmp    L232
L268:
  add    $0x1,%rbx
L232:
  movzbl (%rbx),%eax
  cmp    $0x20,%al
  je     L268
  movzbl (%rbx),%eax
  cmp    $0x2c,%al
  je     L268
  movzbl (%rbx),%eax
  test   %al,%al
  je     L51
  sub    $0x1,%r12d
  test   %r12d,%r12d
  jle    L51
  mov    %r13,%rax
  lea    0x1(%rax),%r13
  movb   $0x20,(%rax)
L51:
  movzbl (%rbx),%eax
  test   %al,%al
  jne    L73
  jmp    L277
L149:
  nop
  jmp    L277
L0:
  nop
  jmp    L277
L46:
  nop
  jmp    L277
L121:
  nop
L277:
  movb   $0x0,0x0(%r13)
  nop
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L196
  call   <__stack_chk_fail@plt>
L196:
  add    $0x68,%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
```

tool_calls: name: retrieve_data
arguments: tag: D9
type_infered: string

tool: D9: %s@%s.UUCP

assistant: ```c
void refscpy(dest, destsize, src) register char *dest, *src;
register int destsize;
{
  register char *dot, *at, *beg;
  char tmpbuf[64];
  while (*src) {
    if (*src != '<') {
      if (--destsize <= 0)
        break;
      *dest++ = '<';
      at = dot = ((char *)0);
      beg = src;
      while (*src && *src != ' ' && *src != ',') {
        if (*src == '.')
          dot = src;
        else if (*src == '@')
          at = src;
        if (--destsize <= 0)
          break;
        *dest++ = *src++;
      }
      if (destsize <= 0)
        break;
      if (dot && !at) {
        int len;
        *dest = *dot++ = '\0';
        sprintf(tmpbuf, "%s@%s.UUCP", dot, beg);
        len = strlen(tmpbuf);
        if (destsize > len) {
          strcpy(dest, tmpbuf);
          dest = dest + len;
          destsize -= len;
        }
      }
      if (--destsize <= 0)
        break;
      *dest++ = '>';
    } else {
      while (*src && --destsize > 0 && (*dest++ = *src++) != '>')
        ;
      if (destsize <= 0)
        break;
    }
    while (*src == ' ' || *src == ',')
      src++;
    if (*src && --destsize > 0)
      *dest++ = ' ';
  }
  *dest = '\0';
}
```