non-printing-characters

motivation I have a 3rd party, somehow long .bat file written for some specific function and would take considerable effort to re-write (which effort is also hindered by my problem). In for loops the most basic way to debug it would seem echoing some information to the screen. I used to do this with \r (0x0D) character in other languages that on some terminals/console re-writes the same line (to avoid overflooding, since in my case the last line would contain the error). I already save the value to a variable. However, since iteration might take quite long, I'd still be happy to write some

The Man-Page of cat says: -v, --show-nonprinting use ^ and M- notation, except for LFD and TAB What is the M- notation and where is it documented? Example: $cat log -A wrote 262144 bytes from file test.x in 9.853947s (25.979 KiB/s)^M$ ^M> ^H^H ^H^H> What means ^M and ^H ? I was wondering this too. I checked the source but it seemed easier to create a input file to get the mapping. I created a test input file with a Perl scrip for( my $i=0 ; $i < 256; $i++ ) { print ( sprintf( "%c is %d %x\n", $i, $i ,$i ) ); } and then ran it through cat -v Also if you see M-oM-;M-? at the start of a file it

I've got a String containing text, control characters, digits, umlauts (german) and other utf8 characters. I want to strip all utf8 characters which are not "part of the language". Special characters like (non complete list) ":/\ßä,;\n \t" should all be preserved. Sadly stackoverflow removes all those characters so I have to append a picture ( link ). Any ideas? Help is very appreciated! PS: If anybody does know a pasting service which does not kill those special characters I would happily upload the strings.. I just wasn't able to find one.. [Edit]: I THINK the regex "\P{Cc}" are all

I have a matrix that contains the string "Energy per �m". Before the 'm' is a diamond shaped symbol with a question mark in it - I don't know what it is. I have tried to get rid of it by using this on the column of the matrix: a=gsub('Energy per �m','',a) [and using copy/paste for the first term of gsub], but it does not work.[unexpected symbol in "a=rep(5,Energy per"]. When I try to extract something from the original matrix with grepl I get: 46: In grepl("ref. value", raw$parameter) : input string 15318 is invalid in this locale How can I get rid of all this sort of signs? I would like to

I need a way to identify certain strings in HTML markup. I know what the strings are, but it is possible that they could be substrings of other strings in the document. To find them, I output a special delimiter character (currently using \032 ). On page load, we go through the HTML and record the location of the strings, and remove the delimiter. Unfortunately, most browsers show the delimiter character until we can find and remove them all. I'd like to avoid that if possible. Is there a character or string that will be preserved in the HTML content (so a comment wont work) but wont be

I want to serialize the Arraylist of type ArrayList<Class> and the class contains two Arraylist of primitive type public class Keyword { private long id; private long wid; private String name; private ArrayList<Integer> rank; private int month; private float avg; private ArrayList<String> date; ... and so on } How can i do that? Lots of thanks in advance Ivaylo Petrov If you want to use Serializable, you should have no problems, because ArrayList is Serializable just as String and every primitive type. public class Keyword implements Serializable {} should do. You can read more about this

I've already wasted a good amount of time dealing with strings (generated by some other source) and I found out that the problem was that the strings have non-printable characters. Today I am dealing with javascript. Does anyone know how to replace non-printable unicode characters in javascript? I found something similar here: How can I replace non-printable Unicode characters in Java? my_string.replaceAll("\\p{C}", "?"); and here: Non-ascii characters added form input only with Safari Browser filename.replace(/[^a-z0-9\.]+/gi, ""); The last option replaces all the characters that are not in