    ciw

(change inner word) will change the *whole word* under the cursor. Compare with

    cw

which will only change the word from the *current cursor position*. For more info see [this SO][1] question/answer.


  [1]: https://stackoverflow.com/questions/1379198/in-vim-how-do-i-delete-a-word-and-go-into-insert-mode

I often find myself wanting to replace one word with another that I have yanked from elsewhere.  The problem with the other solutions is that if you attempt to change a word, then your next paste will *be* that word that you deleted with `cw`.

Try the following:

    1 &quot;This first word should overwrite the second&quot;

    yiw 	yank inner word (copy word under cursor, say &quot;first&quot;).
    ... 	Move the cursor to another word (say &quot;second&quot;).
    viwp 	select &quot;second&quot;, then replace it with &quot;first&quot;. 

Hope that&#39;s what you were looking for.

&lt;kbd&gt;c&lt;/kbd&gt;&lt;kbd&gt;i&lt;/kbd&gt;&lt;kbd&gt;w&lt;/kbd&gt;

    c   change
    iw  inner word

This will delete the word under the cursor (even if the cursor is somewhere in the middle of the word) and enter insert mode.

---

Also see Vim&#39;s documentation for reference:

    :help c
    :help text-objects

If you want to change a word with a previously yanked word, there&#39;s another solution to `viwp` (once you have yanked the first word).

`ciw` removes the previous word and puts you in insert mode where it was. But then you can use `ctrl+r, 0` to insert the contents of register 0 (which contain the previously yanked word). 

So:

    yiw
    [move to next word]
    ciw
    ctrl+r
    0

This works better than `viwp` because after the first usage you can then repeatedly perform the replacement with `.`. It also doesn&#39;t switch into visual mode and highlight briefly.

Try `cw` - as in &#39;change word&#39;.

Use http://linuxmoz.com/vi-commands-cheat-sheet/ or any other cheat sheet as a reference.

To copy word under cursor press: &lt;kbd&gt;b&lt;/kbd&gt;&lt;kbd&gt;v&lt;/kbd&gt;&lt;kbd&gt;e&lt;/kbd&gt;&lt;kbd&gt;y&lt;/kbd&gt;

To replace the word under cursor press: &lt;kbd&gt;b&lt;/kbd&gt;&lt;kbd&gt;v&lt;/kbd&gt;&lt;kbd&gt;e&lt;/kbd&gt;&lt;kbd&gt;p&lt;/kbd&gt;


#Background
I am developing an API Service Layer for a client and I have been requested to catch and log all errors globally.

So, while something like an unknown endpoint (or action) is easily handled by using ELMAH or by adding something like this to the `Global.asax`:

    protected void Application_Error()
    {
         Exception unhandledException = Server.GetLastError();
         //do more stuff
    }

. . .unhandled errors that are not related to routing do not get logged.  For example:

    public class ReportController : ApiController
    {
        public int test()
        {
            var foo = Convert.ToInt32(&quot;a&quot;);//Will throw error but isn&#39;t logged!!
            return foo;
        }
    }

I have also tried setting the `[HandleError]` attribute globally by registering this filter:

    filters.Add(new HandleErrorAttribute());

But that also does not log all errors.

#Problem/Question
How do I intercept errors like the one generated by calling `/test` above so that I can log them?  It seems that this answer should be obvious, but I have tried everything I can think of so far. 

Ideally, I want to add some things to the error logging, such as the IP address of the requesting user, date, time, and so forth.  I also want to be able to e-mail the support staff automatically when an error is encountered.  All of this I can do if only I can intercept these errors when they happen!

#RESOLVED!
Thanks to Darin Dimitrov, whose answer I accepted, I got this figured out.  *WebAPI does **not** handle errors in the same way as a regular MVC controller.*

Here is what worked:

1) Add a custom filter to your namespace:

    public class ExceptionHandlingAttribute : ExceptionFilterAttribute
    {
        public override void OnException(HttpActionExecutedContext context)
        {
            if (context.Exception is BusinessException)
            {
                throw new HttpResponseException(new HttpResponseMessage(HttpStatusCode.InternalServerError)
                {
                    Content = new StringContent(context.Exception.Message),
                    ReasonPhrase = &quot;Exception&quot;
                });
    
            }
    
            //Log Critical errors
            Debug.WriteLine(context.Exception);
    
            throw new HttpResponseException(new HttpResponseMessage(HttpStatusCode.InternalServerError)
            {
                Content = new StringContent(&quot;An error occurred, please try again or contact the administrator.&quot;),
                ReasonPhrase = &quot;Critical Exception&quot;
            });
        }
    }

2) Now register the filter globally in the **WebApiConfig** class:

    public static class WebApiConfig
    {
         public static void Register(HttpConfiguration config)
         {
             config.Routes.MapHttpRoute(&quot;DefaultApi&quot;, &quot;api/{controller}/{action}/{id}&quot;, new { id = RouteParameter.Optional });
             config.Filters.Add(new ExceptionHandlingAttribute());
         }
    }

**OR** you can skip registration and just decorate a single controller with the `[ExceptionHandling]` attribute.

How do I log ALL exceptions globally for a C# MVC4 WebAPI app?

In my Win 7 development machine, and in order to use SQL Express instance instead of the localDB installed by default. I unchecked &quot;Use IIS Express&quot; in my MVC 4 project properties page (Web tab), then I got the following error:

**ASP.NET 4.5 has not been registered on the Web server. You need to manually configure your Web server for ASP.NET 4.5 in order for your site to run correctly.**

I verified that ASP.NET is activated within the IIS features.

Please what could be done to resolve this?


ASP.NET 4.5 has not been registered on the Web server

How do I replace a word under the cursor in Vim. 

So instead of using `dw` then `i` then the word and then `Esc`, is there a simpler combination to replace the word under the cursor?

How to replace a single word under cursor?

<p>How do I replace a word under the cursor in Vim.</p>
<p>So instead of using <code>dw</code> then <code>i</code> then the word and then <code>Esc</code>, is there a simpler combination to replace the word under the cursor?</p>


How can we use vim to delete characters from the beginning of the line till the cursor.
Say, we have a string &quot;hello world&quot; while the cursor is on &quot;w&quot;. How can we delete from &quot;h&quot; till &quot;w&quot;.

vi to delete from the beginning of the line till the cursor

I googled and that&#39;s what it says:

To go back a word, b is used. Once again, B will include more characters in what Vim considers a word. 

I didn&#39;t understand what B does different from b. Can you give me an example to make it clear for me to understand? Thanks.

[EDIT]Actually I wonder this because in the online vim [game][1], I tried to go back to WORDS from ! with b, but it didn&#39;t work. However when I tried it with Vim installed in my computer, it worked with b. So is this only for to make player use B with the help of clue?

Here is the picture of game:

![enter image description here][2]  


  [1]: http://vim-adventures.com/
  [2]: http://i.stack.imgur.com/GcQXZ.png

What&#39;s the difference between b and B in Vim?

I&#39;m using &lt;kbd&gt;Ctrl&lt;/kbd&gt;-&lt;kbd&gt;]&lt;/kbd&gt; in Vim to navigate using Ctags.
How do I navigate to alternate file if there are multiple matches?

Ex. `something.publish` in a codebase containing multiple occurrences of `publish`:

    class Foo
      def publish
      end
    end
    
    class Bar
      def publish
      end
    end

How to navigate multiple ctags matches in Vim?

I would like to have a nice and easy way of managing vim plugins.
I found [NeoBundle](https://github.com/Shougo/neobundle.vim) and [Vundle](https://github.com/gmarik/vundle).
What are the main differences between them? I know that NeoBundle is a fork of Vundle, but what is it that makes it different?

What do you use?

what are the differences between Vundle and NeoBundle?

After updating the janus vim distribution there appears to be a problem with using vim for commit messages. The best example of this is when doing a `git pull` to get someone else&#39;s changes. The vim editor is displayed, I type my commit message, I enter &lt;kbd&gt;:&lt;/kbd&gt;&lt;kbd&gt;w&lt;/kbd&gt;&lt;kbd&gt;q&lt;/kbd&gt; but instead of the commit working, I get the following error message:

    error: There was a problem with the editor &#39;vi&#39;.
    Not committing merge; use &#39;git commit&#39; to complete the merge.

I then have to manually commit :(

How do I get git to play nicely with vim?

Using vim for git commit messages broken after updating janus

In Java, I&#39;ve a File-Name-String. There I want to replace all illegal Characters with &#39;_&#39;, but not `a-z`, `0-9`, `-`,`.` and `_`

I tried following code: But this did not worked!

    myString = myString.replaceAll(&quot;[\\W][^\\.][^-][^_]&quot;, &quot;_&quot;);



Replacing illegal character in fileName

I need to recursively search for a specified string within all files and subdirectories within a directory and replace this string with another string.

I know that the command to find it might look like this:

    grep &#39;string_to_find&#39; -r ./*

But how can I replace every instance of `string_to_find` with another string?

How to grep and replace

I&#39;m trying to replace multiple words in a string with multiple other words. The string is &quot;I have a cat, a dog, and a goat.&quot;


However, this does not produce &quot;I have a dog, a goat, and a cat&quot;, but instead it produces &quot;I have a cat, a cat, and a cat&quot;. Is it possible to replace multiple strings with multiple other strings at the same time in JavaScript, so that the correct result will be produced?

    var str = &quot;I have a cat, a dog, and a goat.&quot;;
    str = str.replace(/cat/gi, &quot;dog&quot;);
    str = str.replace(/dog/gi, &quot;goat&quot;);
    str = str.replace(/goat/gi, &quot;cat&quot;);
    
    //this produces &quot;I have a cat, a cat, and a cat&quot;
    //but I wanted to produce the string &quot;I have a dog, a goat, and a cat&quot;.

Replace multiple strings with multiple other strings

I need to replace the whole line with `sed` if it matches a pattern.
For example if the line is &#39;one two six three four&#39; and if &#39;six&#39; is there, then the whole line should be replaced with &#39;fault&#39;.



Replace whole line when match found with sed

I have a parameter file of the form:

    parameter-name parameter-value

Where the parameters may be in any order but there is only one parameter per line.  I want to replace one parameter&#39;s `parameter-value` with a new value.

I am using a line replace function [posted previously][1] to replace the line which uses Python&#39;s [`string.replace(pattern, sub)`][2].  The regular expression that I&#39;m using works for instance in vim but doesn&#39;t appear to work in `string.replace()`. 

Here is the regular expression that I&#39;m using:

    line.replace(&quot;^.*interfaceOpDataFile.*$/i&quot;, &quot;interfaceOpDataFile %s&quot; % (fileIn))

Where `&quot;interfaceOpDataFile&quot;` is the parameter name that I&#39;m replacing (/i for case-insensitive) and the new parameter value is the contents of the `fileIn` variable. 

Is there a way to get Python to recognize this regular expression or else is there another way to accomplish this task?


  [1]: https://stackoverflow.com/questions/39086/search-and-replace-a-line-in-a-file-in-python
  [2]: http://www.tutorialspoint.com/python/string_replace.htm%20String.Replace

Content Type	Original Author	Original Content on Stackoverflow
Question	sayth	View Question on Stackoverflow
Solution 1 - Vim	Brian Agnew	View Answer on Stackoverflow
Solution 2 - Vim	Ethereal	View Answer on Stackoverflow
Solution 3 - Vim	Xophmeister	View Answer on Stackoverflow
Solution 4 - Vim	Connor	View Answer on Stackoverflow
Solution 5 - Vim	Kosma Dunikowski	View Answer on Stackoverflow
Solution 6 - Vim	ABN	View Answer on Stackoverflow

How to replace a single word under cursor?

Vim Problem Overview

Vim Solutions

Solution 1 - Vim

Solution 2 - Vim

Solution 3 - Vim

Solution 4 - Vim

Solution 5 - Vim

Solution 6 - Vim

ASP.NET 4.5 has not been registered on the Web server

How do I log ALL exceptions globally for a C# MVC4 WebAPI app?

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