Support both regexp and invert regexp in same invocation

[balki]

Suppose a text file contains below:

❯ cat foo.txt 
hello world
hello foo
foo bar

consider this:

❯ rg hello
foo.txt
1:hello world
2:hello foo

Say, I don't want lines that match world, I have to do below:

❯ rg hello | rg -v world
foo.txt:hello foo

This requires two rg invocation and loose all the colors. It would be nice to support both in single invocation.

❯ rg -e hello -y world
error: Found argument '-y' which wasn't expected, or isn't valid in this context

[BurntSushi]

This is a duplicate of #875.

rg foo | rg -v bar is otherwise the intended solution. In general, "losing colors and formatting" is not something I can allow to justify eschewing the utility of shell pipelines in all cases. So I don't know if #875 will ever happen.

Running ripgrep multiple times should in general be a non-issue. At least, I do not consider multiple invocations in and of itself a downside.

[balki]

Thank you for your response. I understand the use-case is not justified for the feature. Just in case you revisit this later, here are the list of downsides I can think of.

1. No colors and formatting
2. The filename becomes part of the text and affects the subsequent searches. --no-filename flag can be used. But now the filenames are lost.
3. line numbers are lost

[BurntSushi]

You can get colors back with --color always and line number back with -n. So rg foo -n --color always | rg -v bar.

(2) is indeed a downside, but one that is usually pretty easy to work around.