user: Demonstrate the C code that generates the assembly output below:

```asm
<cleanline>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %rdi,%rbp
  mov    %rsi,0x8(%rsp)
  mov    $0x0,%ebx
  jmp    L127
L134:
  movb   $0x20,0x0(%rbp,%rbx,1)
L73:
  add    $0x1,%rbx
L127:
  mov    %rbp,%rdi
  call   <strlen@plt>
  cmp    %ebx,%eax
  jle    L34
  movzbl 0x0(%rbp,%rbx,1),%eax
  cmp    $0xa,%al
  je     L134
  cmp    $0x9,%al
  jne    L288
  movb   $0x20,0x0(%rbp,%rbx,1)
  jmp    L73
L288:
  cmpb   $0x23,0x0(%rbp,%rbx,1)
  jne    L73
  movb   $0x0,0x0(%rbp,%rbx,1)
  jmp    L73
L34:
  mov    %rbp,%rdi
  call   <strlen@plt>
  lea    -0x1(%rax),%edx
  movslq %edx,%rcx
  add    %rbp,%rcx
  cmpb   $0x20,(%rcx)
  jne    L283
  test   %edx,%edx
  js     L283
  sub    $0x2,%eax
  cltq
L187:
  movb   $0x0,(%rcx)
  lea    0x0(%rbp,%rax,1),%rcx
  cmpb   $0x20,0x0(%rbp,%rax,1)
  sete   %sil
  mov    %eax,%edx
  not    %edx
  shr    $0x1f,%edx
  sub    $0x1,%rax
  test   %dl,%sil
  jne    L187
L283:
  mov    %rbp,%rdi
  call   <strlen@plt>
  mov    %eax,%r12d
  test   %eax,%eax
  je     L290
  mov    $0x0,%r15d
  mov    $0x0,%r12d
  jmp    L178
L56:
  movslq %r15d,%rdx
  mov    0x8(%rsp),%rcx
  movb   $0x20,(%rcx,%rdx,1)
  add    $0x1,%r15d
  jmp    L63
L68:
  movslq %r12d,%r13
  add    %rbp,%r13
  cmpb   $0x20,0x0(%r13)
  jne    L252
  jmp    L271
L238:
  mov    %r14d,%r15d
L271:
  movslq %r15d,%rax
  mov    0x8(%rsp),%rsi
  cmpb   $0x20,-0x1(%rsi,%rax,1)
  je     L204
L178:
  mov    %rbp,%rdi
  call   <strlen@plt>
  cmp    %r12d,%eax
  jle    L140
  movslq %r12d,%rbx
  lea    0x0(%rbp,%rbx,1),%rax
  cmpb   $0x20,(%rax)
  jne    L63
  test   %r12d,%r12d
  jne    L56
L63:
  cmpb   $0x20,(%rax)
  jne    L17
L123:
  mov    %ebx,%r12d
  mov    %rbp,%rdi
  call   <strlen@plt>
  cmp    %ebx,%eax
  jle    L68
  lea    0x1(%rbx),%r12d
  add    $0x1,%rbx
  cmpb   $0x20,0x0(%rbp,%rbx,1)
  je     L123
L17:
  movslq %r12d,%r13
  add    %rbp,%r13
L252:
  lea    0x1(%r12),%ebx
  movslq %ebx,%rbx
  mov    %r15d,%r14d
  movslq %r15d,%r15
  movslq %r12d,%r12
  sub    %r12,%r15
  add    0x8(%rsp),%r15
L70:
  lea    -0x1(%rbx),%r12d
  mov    %rbp,%rdi
  call   <strlen@plt>
  cmp    %r12d,%eax
  jle    L238
  movzbl 0x0(%r13),%eax
  mov    %al,-0x1(%r15,%rbx,1)
  add    $0x1,%r14d
  mov    %ebx,%r12d
  lea    0x0(%rbp,%rbx,1),%r13
  add    $0x1,%rbx
  cmpb   $0x20,-0x1(%rbp,%rbx,1)
  jne    L70
  mov    %r14d,%r15d
  jmp    L271
L140:
  mov    0x8(%rsp),%rbx
  mov    %rbx,%rdi
  call   <strlen@plt>
  cltq
  cmpb   $0x20,-0x1(%rbx,%rax,1)
  je     L194
L75:
  mov    $0x0,%ebx
  mov    $0x1,%r12d
  jmp    L241
L194:
  mov    0x8(%rsp),%rbx
  mov    %rbx,%rdi
  call   <strlen@plt>
  cltq
  movb   $0x0,-0x1(%rbx,%rax,1)
  jmp    L75
L18:
  mov    0x8(%rsp),%rax
  cmpb   $0x20,(%rax,%rbx,1)
  sete   %al
  movzbl %al,%eax
  add    %eax,%r12d
  add    $0x1,%rbx
L241:
  mov    0x8(%rsp),%rdi
  call   <strlen@plt>
  cmp    %ebx,%eax
  jg     L18
L290:
  mov    %r12d,%eax
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L204:
  mov    $0x0,%r12d
  jmp    L290
```

assistant: ```c
int cleanline(char *sbuf, char *dbuf) {
  int x, y;
  for (x = 0; x < strlen(sbuf); x++) {
    if (sbuf[x] == '\n')
      sbuf[x] = ' ';
    if (sbuf[x] == '\t')
      sbuf[x] = ' ';
    if (sbuf[x] == '#')
      sbuf[x] = '\0';
  }
  x = strlen(sbuf) - 1;
  while (sbuf[x] == ' ' && x > -1) {
    sbuf[x] = '\0';
    x--;
  }
  if (!strlen(sbuf))
    return 0;
  x = 0;
  y = 0;
  while (x < strlen(sbuf)) {
    if (sbuf[x] == ' ' && x) {
      dbuf[y] = ' ';
      y++;
    }
    while (sbuf[x] == ' ' && x < strlen(sbuf))
      x++;
    while (sbuf[x] != ' ' && x < strlen(sbuf)) {
      dbuf[y] = sbuf[x];
      y++;
      x++;
    }
    if (dbuf[y - 1] == ' ')
      return 0;
  }
  if (dbuf[strlen(dbuf) - 1] == ' ')
    dbuf[strlen(dbuf) - 1] = '\0';
  y = 1;
  for (x = 0; x < strlen(dbuf); x++)
    if (dbuf[x] == ' ')
      y++;
  return y;
}
```