regular expression: match any word until first space

regex match word
regex match until character or end of string
regular expression starts with word and ends with word
regex match until string
regex end of word
regex match any word in list
regex match before and after
regex everything before comma

I have the following line:

hshd    household   8/29/2007   LB

I want to match anything that comes before the first space (whitespace). So, in this case, I want to get back



Match everything until the first space - Perl, I need to regex everything untill the first space and assign it to a variable. you'll be hit by performance penalties on any regexps you use (see  Regular Expression to . Character classes. any character except newline \w \d \s: word, digit, whitespace

This should do it:


Match Until "_", Try it here · Regex to match all emoji · floatRegex · Decimal · Lopez Gil - Second Exercisse · Smith · 1. hello world · 20 word limit per sentence 1.0.1 · fechaHora1 Explanation: ^ matches the start of line, ([^ \t]+) matches 1 or more (due to +) characters other than space and tab (due to [^ \t]), and then any number of characters up to the end of the line with .*. See settings: In case you might have leading whitespace, you might want to use.

Perhaps you could try ([^ ]+) .*, which should give you everything to the first blank in your first group.

Match Until "_", Before the first character in the string, if the first character is a word character. Effectively, \B matches at any position between two word characters as well as at first regex token, \b matches between the space and the second i in the string. The word boundary \b matches positions where one side is a word character (usually a letter, digit or underscore—but see below for variations across engines) and the other side is not a word character (for instance, it may be the beginning of the string or a space character).

for the entire line


match string before x, RegexBuddy will analyze any regular expression and present it to you in a clearly to The question mark in the regex makes the star lazy, to make sure it stops before the first closing tag rather than Instead of [ \t] which matches a space or a tab, you can expand the character class into Two Words Near Each Other. Take this regular expression: /^[^abc]/. This will match any single character at the beginning of a string, except a, b, or c. If you add a * after it – /^[^abc]*/ – the regular expression will continue to add each subsequent character to the result, until it meets either an a, or b, or c.

I think, that will be good solution: /\S\w*/

Regex Tutorial - \b Word Boundaries, Regular expressions are useful in any scenario that benefits from full or for the first column, B1-B8 for the second column and so on until H1-H8 for and matches word characters until it sees some space followed by an a. The \K syntaxforces the regex engine to consider that any matched regex, before the \K form, is forgotten and that the final regex to match is, ONLY, the regex, located after the \K form IMPORTANT : Due to the \K feature, included in the second S/R, you must use the Replace All button, exclusively.

Regular Expression Examples, First we need to create a regular expression to match the first 150 words. with a + in case the text has more than one space between words. The most common forms of whitespace you will use with regular expressions are the space (␣), the tab (\t), the new line ( ) and the carriage return (\r) (useful in Windows environments), and these special characters match each of their respective whitespaces.

Everything you need to know about Regular Expressions, Above RegEx matches "bot” , "bat” and any other word of three Here . means “​any character” and * means “anything before this symbol repeated If you wanted to match everything up to the first occurrence of "lua" instead,  Rather they match a position i.e. before, after, or between characters. To match start and end of line, we use following anchors: Caret (^) matches the position before the first character in the string. Dollar ($) matches the position right after the last character in the string.

RegEx - Extracting the first N words, Regular Expression to . Character classes. any character except newline \w \d \s: word, digit, whitespace

  • What's wrong with splitting and getting the first elem?
  • I would further prepend ^ to get the first word only
  • while generally correct, I think the need for ^ depends on particular language implementations or regexp. for example in Python you'd use re.match for this task.
  • This matches all the words and not just the first one, see this example.
  • @RyanGates deselect Global and you will see that it works as intended and expected. Refer to SilentGhost for notes on language implementations if you're still having trouble.
  • @Volvox Thanks, I had missed that.
  • @ire_and_curses, on Sublime Text, that will skip the last word in a line. For some reason, this does not: ([^ ])+
  • its derived from that answer.
  • Then explain why you think a new answer is required, and explain any possible difference; but you will find that it is already discussed in the comments on the accepted answer. Also, the second highest voted answer is quite similar, but somewhat more elegant in that it prefers the simpler \S over the equivalent but clunky [^\s].