能少保留彩色输出吗？

Question

我能得到更少的不单色输出吗？

例如，从的输出git diff是彩色的，但git diff | less不是。

Answer 1

用：

git diff --color=always | less -r

--color=alwaysgit即使输出是管道（不是 tty），是否也可以告诉输出颜色代码。并且-r可以告诉less解释这些颜色代码和其他转义序列。使用-R仅ANSI颜色代码。

Answer 2

另一种选择是启用颜色并使用“less -r”作为您的寻呼机。

git config --global color.ui true
git config --global core.pager 'less -r'

这导致

[color]
    ui = true
[core]
    pager = less -r

在你的 ~/.gitconfig 中

有关更多信息，请参阅Pro Git 书籍。

的可能值color.ui可以在 git-config 的手册页中找到。的输出man git-config | grep "color.ui$" -A8是

color.ui
    This variable determines the default value for variables such as color.diff and
    color.grep that control the use of color per command family. Its scope will expand as
    more commands learn configuration to set a default for the --color option. Set it to
    false or never if you prefer Git commands not to use color unless enabled explicitly
    with some other configuration or the --color option. Set it to always if you want all
    output not intended for machine consumption to use color, to true or auto (this is the
    default since Git 1.8.4) if you want such output to use color when written to the
    terminal.

Answer 3

使用-r( --raw-control-chars) 选项来减少，或者也使用-R（仅限 ANSI 转义序列）。

我有一个别名 ~/.bashrc

alias rless='less -r'

Answer 4

还tree可以选择强制启用颜色：

tree -C | less -r

依此类推ls：

ls -lR --color | less -r

Answer 5

如果有人有兴趣寻呼JSON与jq和less它可以使用来实现：

jq -C <jq args> file.json | less -R

例如

jq -C . file.json | less -R

来源：https : //github.com/stedolan/jq/issues/764#issuecomment-95355331

Answer 6

我知道这是旧的，许多人已经提供了正确的答案，但我想补充一点，它始终是更好地使用less -R，而不是less -r如果你只需要ANSI颜色-r可能会导致显示字符的问题。

从手册：

  -r or --raw-control-chars
         Causes "raw" control characters to be displayed.   The  default
         is  to display control characters using the caret notation; for
         example, a control-A (octal 001) is displayed as  "^A".   Warn?
         ing:  when the -r option is used, less cannot keep track of the
         actual appearance of the screen (since this depends on how  the
         screen responds to each type of control character).  Thus, var?
         ious display problems may result,  such  as  long  lines  being
         split in the wrong place.

  -R or --RAW-CONTROL-CHARS
         Like  -r,  but only ANSI "color" escape sequences are output in
         "raw" form.  Unlike -r, the  screen  appearance  is  maintained
         correctly  in  most  cases.   ANSI "color" escape sequences are
         sequences of the form:

              ESC [ ... m

Answer 7

只是在“使用less -r”上添加另一个版本：

使用LESS值为 r的环境变量（或将 r 添加到它已经是的任何内容）

例如，当我在我的.bashrc：

export LESS=-Xr

X在退出时停止清除屏幕。