MacOS(UNIX): `col` 这个命令的源码在哪？如何找到最新版？

[gIrl1990]

• 就重定向到文件的时候，有些内容带 控制字符 , col 就可以移除掉，我不知道对不对网上看来的，有其它好方法求赐教，比如 man find >m-find.txt 或者 `tree -L 1 >tree-1.txt
• col 这个命令的源码在哪？如何找到最新版？

NAME
     col -- filter reverse line feeds from input

SYNOPSIS
     col [-bfhpx] [-l num]

DESCRIPTION
     The col utility filters out reverse (and half reverse) line feeds so that the output is in the correct order with only forward and half forward line feeds, and replaces white-space characters with tabs where possible.  This can be useful in processing the output of nroff(1) and tbl(1).

HISTORY
     A col command appeared in Version 6 AT&T UNIX.

• 似乎是中文引起的错误
• 另外找了几个，虽然不报错，但也不支持中文
  • https://www.retro11.de/ouxr/43bsd/usr/src/usr.bin/col.c.html
  • https://www.retro11.de/ouxr/u7ed/usr/src/cmd/col.c.html
• https://github.com/karelzak/util-linux
  • linux的， macos 上编译困难
  • https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/tree/Documentation/deprecated.txt

    https://pubs.opengroup.org/onlinepubs/7908799/xcu/intro.html#tag_001_003_003
    Legacy Utilities: col - filter reverse line-feeds (LEGACY)
    https://github.com/karelzak/util-linux/blob/master/Documentation/col.txt
    

  • Legacy了，那 col 换成啥命令了？

Fixed: tree -NL 2 ~ >tree-2.txt

man 的话，暂不知道，你比如说从 https://github.com/man-pages-zh/manpages-zh 随便找一个带中文的。macos man 查看失败。

[ysc3839]

https://opensource.apple.com/source/text_cmds/text_cmds-99/col/

[gIrl1990]

@ysc3839 `tree -L 2 ~ >tree-2.txt` 会报 `col: Illegal byte sequence` 错误，源码找不到 `Illegal` 字样，233

[xml123]

直接替换 ascii 小于 32 的字符不行吗

[ysc3839]

@gIrl1990
https://opensource.apple.com/source/xnu/xnu-4903.241.1/bsd/sys/errno.h.auto.html
#define EILSEQ 92 /* Illegal byte sequence */

https://opensource.apple.com/source/Libc/Libc-1272.250.1/gen/errlst.c.auto.html
"Illegal byte sequence", /* 92 - EILSEQ */

[gIrl1990]

@xml123 怎么写？😜

[gIrl1990]

命令没写全，是
`man find | col -b >m-find.txt`
`tree -L 2 ~ | col -b >tree-2.txt`