GREP | GREP : Genome for REPositioning drugs | Genomics library

There is a fundamental difference between POSIX ("text-directed") and NFA ("regex-directed") engines. POSIX engines (grep here uses a POSIX BRE regex flavor, it is the flavor used by default) will parse the input text applying the regex to it and return the longest match possible. NFA engine (Python re engine is an NFA engine) here does not re-consume (backtrack) when the subsequent pattern parts match.

See reference on regex-directed and text-directed engines:

A regex-directed engine walks through the regex, attempting to match the next token in the regex to the next character. If a match is found, the engine advances through the regex and the subject string. If a token fails to match, the engine backtracks to a previous position in the regex and the subject string where it can try a different path through the regex... Modern regex flavors using regex-directed engines have lots of features such as atomic grouping and possessive quantifiers that allow you to control this backtracking.

A text-directed engine walks through the subject string, attempting all permutations of the regex before advancing to the next character in the string. A text-directed engine never backtracks. Thus, there isn’t much to discuss about the matching process of a text-directed engine. In most cases, a text-directed engine finds the same matches as a regex-directed engine.

The last sentence says "in most cases", but not all cases, and yours is a good illustration that discrepances may occur.

To avoid consuming M or F that are immediately followed with D, I'd suggest using

Perhaps my failed attempts will help someone else solve this problem; my approach:

• boot up a clean CentOS 7 vm
• install R and some dependencies

It may be faster with a join

Huh. This surprised me a bit.

composer is correctly reporting the PHP version it's using. The problem is that it's not using the "correct" PHP interpreter.

The issue arises because of how you are installing composer.

Apparently by doing apk add composer another version of PHP gets installed (you can find it on /usr/bin/php8, this is the one on version 8.0.14).

Instead of letting apk install composer for you, you can do it manually. There is nothing much to install it in any case, no need to go through the package manager. Particularly since PHP has not been installed via the package manager on your base image.

I've just removed the line containing composer from the apk add --update command, and added this somewhere below:

I figured out the following with some trial and error:

• Get the "IOResources" node from the IO registry.
• Get the "KeyboardBacklight" property from that node.
• (Conditionally) convert the property value to a boolean.

I have tested this on an MacBook Air (with keyboard backlight) and on an iMac (without keyboard backlight), and it produced the correct result in both cases.

With POSIX awk, I'd use match and the builtin RSTART and RLENGTH variables:

Both fails are fixed with the addition of anchors ^ and $ and quantifier +

These both work:

Just use the version that MassTransit depends upon, which is much earlier than v13. Upgrading past that without the proper assembly redirects is likely causing your issue.