I don’t think “just roll your own” is a reasonable answer to people trying to get actual work done, in an area where every other modern language has a trivial way to do this. Including Scheme. So here’s some actual resources; my code is from a project where I was trying to replace “qql foo … Read more
patchutils has a command grepdiff that can be use to achieve this. # check that the regex search correctly matches the changes you want. git diff -U0 | grepdiff ‘regex search’ –output-matching=hunk # then apply the changes to the index git diff -U0 | grepdiff ‘regex search’ –output-matching=hunk | git apply –cached –unidiff-zero I use … Read more
See uniq -c. You’ll want to pull out the bit you want, sort the result, pipe thru uniq, sort the output. Something like this maybe: egrep ‘\.[0-9]+:’ output.txt | sort | uniq -c | sort -nr Clarification: I’ve used grep here because it’s not clear what your output.txt format looks like, but you’ll want to … Read more
Expanding on minitech’s answer: ( start a capture group \d a shorthand character class, which matches all numbers; it is the same as [0-9] + one or more of the expression ) end a capture group / a literal forward slash Here is an example: >>> import re >>> exp = re.compile(‘(\d+)/(\d+)’) >>> foo = … Read more
Neither standard nor extended regular expressions support the look behind. Use Perl compatible regexes: grep -P ‘(?<!\\)xxx’ test.tex
Your answer is in the Matcher#appendReplacement documentation. Just put your function call in the while loop. [The appendReplacement method] is intended to be used in a loop together with the appendTail and find methods. The following code, for example, writes one dog two dogs in the yard to the standard-output stream: Pattern p = Pattern.compile(“cat”); … Read more
This is because you are using the hyphen within other characters, so that grep understands it as a range, which happens to be invalid. You are basically doing grep “[\-‘]” file This is interpreted by grep as you providing a range of characters to be checked on, like for example grep “[a-z]” file. But the … Read more
Use a positive look ahead and look behind assertion to match the angle brackets, use .*? to match the shortest possible sequence of characters between those brackets. Find all values by iterating the MatchCollection returned by the Matches() method. Regex regex = new Regex(“(?<=<<).*?(?=>>)”); foreach (Match match in regex.Matches( “this is a test for <<bob>> … Read more