This is just another variation of grep (because we needed more of those) that allows you to require or reject files before the normal grep process based upon patterns. For example, you could reject all patterns that include version :latest before matching the version pattern in a bunch of package manifest files.
This was built using C++17 and it uses the POSIX header file glob.h which I assume is only available on macOS and Linux. I tested it on macOS.
make release
./cgrep$ cgrep src/*.cpp src/*.hpp --count
# Enter grep patterns starting with...
# '+' for required patterns
# '-' for rejected patterns
# '=' for matched patterns
# Enter a blank line to submit.
> + <map>
> + <vector>
> = #include
>
src/grep_factory.hpp:4
src/output_strategy.hpp:5
src/parse_input.hpp:3
$ cgrep src/*.cpp src/*.hpp --count --pattern-file=patterns.txt
src/grep_factory.hpp:4
src/output_strategy.hpp:5
src/parse_input.hpp:3
patterns.txt
+ <map>
+ <vector>
= #include
$ cgrep src/*.cpp src/*.hpp --count --again
src/grep_factory.hpp:4
src/output_strategy.hpp:5
src/parse_input.hpp:3
[cgrep]
-------
Conditionally grep files using multiple
required(+), rejected(-) and matched(=) patterns.
Required and rejected patterns are resolved
before returning matches.
[usage]
-------
cgrep [-acEhilLn] [-p=pattern-file] [-o=output-file] [file ...]
[options]
---------
-a / --again
Rerun previous query again.
-c / --count
Count the number of matched lines in each file.
-E / --extended-regexp
Sets pattern matching to egrep.
-h / --help
Shows this page.
-i / --ignore-case
Sets grep to ignore case when matching.
-l / --files-with-matches
Lists all files with matched lines.
-L / --files-without-matches
Lists all files without matched lines in search set.
-n / --line-number
Each output line is preceded by its relative line number.
-o= / --output-file=
Writes results to a file.
-p= / --pattern-file=
Reads grep patterns from a file.