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Questions tagged [control-characters]

Control characters are non-printing characters used to send signals to the output terminal.

Control characters are generally non-printing characters that are used to send signals to the output terminal.

More information is available on Wikipedia.

218 questions
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Find/replace string with carriage return and line feed in PowerShell

Is there a way to have PowerShell find and replace a string (for example ~}}|{{E) with a carriage return and line feed (\r\nE)? For example: $filenames = @("E:\blergfest.csv") foreach ($file in $filenames) { $outfile = "$file" + ".out" …
Jerry Sweeton
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Matching Unicode control characters except for three with Regular Expressions

I would need to get a Regular Expression, which matches all Unicode control characters except for carriage return (0x0d), line feed (0x0a) and tabulator (0x09). Currently, my Regular Expression looks like this: /\p{C}/u I just need to define these…
Tower
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Node JS REPL, Sockets, and Telnet - Tab Completion, Arrow Keys, etc

I have been playing around with Node's REPL. I thought it would be pretty cool to make it available via a Socket, connect to it via Telnet/puTTY/whatever, and debug my server on-the-fly. I used the example found here:…
BMiner
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Escaping control characters in Oracle XDB

I'm completely new to Oracle's XDB, in particular using it to generate XML output from a database table, and am working on an application which is moving from 9i (Oracle9i Enterprise Edition Release 9.2.0.5.0 - Production) to 11g (Oracle Database…
DaveyDaveDave
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Remove "Invisible" Control Characters in VB.Net

I am currently reading in a text file in VB.Net using Dim fileReader As String fileReader = My.Computer.FileSystem.ReadAllText(file) File contains several lines of text and when I read in the text file, it knows that they are on separate lines and…
Kyle Uithoven
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Why Javascript string.replace("\n\t","xxx") replaces "\n\t" with "\nxxx"?

I expect to replace "\n\t" with "xxx" in a txt file: "数字多功能光盘 DVD shùzì" I do this: str.replace("\n\t","xxx") method matches needed parts but leaves \n part and only replaces \t for 'xxx'.WHY? why when use crtl+F in VSCOde and it works like…
coobit
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Why does '\x01\x1A' (Start-of-Header and Substitute control characters) in a textfile line stop a for-loop prematurely?

I'm using Python 2.7.15, Windows 7 Context I wrote a script to read and tokenize each line of a FileZilla log file (specifications here) for the IP address of the host that initiated the connection to the FileZilla server. I'm having trouble parsing…
Minh T.
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why doesn't ctrl+d exit ghci in emacs shell ... but does exit for the python REPL?

When using the emacs shell buffer, the control-d keystroke doesn't exit from the ghci REPL but does exit the python REPL. Rather than exiting, gchi reports lexical error at character '\EOT'. How can I get control-d to properly exit the ghci REPL in…
Rick Majpruz
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Replace a character with control character Field Seperator(\034) in powershell

(Get-Content C:\Users\georgeji\Desktop\KAI\KAI_Block_2\Temp\KAI_ORDER_DATARECON3.NONPUBLISH) | Foreach-Object {$_ -replace "~", "\034"} | Set-Content C:\Users\georgeji\Desktop\KAI\KAI_Block_2\Temp\KAI_ORDER_DATARECON4.NONPUBLISH I am using the…
TomG
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Python XML Compatible String

I am writing an XML file using lxml and am having issues with control characters. I am reading text from a file to assign to an element that contains control characters. When I run the script I receive this error: ValueError: All strings must be XML…
Joel Parker
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JsonParsing : UTF-8 encoding : JsonParseException: Illegal unquoted character

I am trying to parse a JSON which is obtained from rest service via RestTemplate. When I try to parse a JSON which contains a newline or tab character, it is throwing the following exception: org.codehaus.jackson.JsonParseException: Illegal unquoted…
RahulArackal
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Java code does not recognize ctrl-m(^M) but works fine for other ctrl-characters(^Q,^A,^T etc) Linux

I have a requirement where I need to remove two specific control characters: ^@ and ^M, from the incoming data in Java on a Linux box. Below mentioned parts work as expected: String s; s = s.replaceAll("\\x00","as"); s = s.replaceAll("\\000",…
user3032283
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String literal containing control characters

I'm creating a sort of interactive tutorial that works like the following: echo "What do you press if you want to move one word backwords in bash?" read ans if [ "$ans" == "ESCb" ]; then echo RIGHT! else echo WRONG! fi Now, how can I input the…
Boyang
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Removing binary control characters from a text file

I have a text file that contains binary control characters, such as "^@" and "^M". When I try to perform string operations directly on the text file, the control characters crash the script. Through trial and error, I discovered that the more…
svengineer99
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Paste from Word + Create XML document -> hexadecimal value 0x0C, is an invalid character (.Net)

I have a webpage that accepts HTML-input from users. The input is converted into an xml document using the System.Xml namespace, like this: var doc = new…
Martin Ørding-Thomsen
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