(Jnyjyd I truly appreciate this post. Keep writing.) |
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| + | {{review}} |
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| − | Jnyjyd I truly appreciate this post. Keep writing. |
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| + | {{TipImported |
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| + | |id=35 |
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| + | |previous=34 |
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| + | |next=36 |
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| + | |created=2001 |
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| + | |complexity=intermediate |
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| + | |author=slimzhao |
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| + | |version=5.7 |
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| + | |rating=-10/10 |
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| + | |category1=C |
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| + | |category2=C++ |
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| + | }} |
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| + | With the following mappings, you can press <code>\c</code> to change all C++ comments to C comments, or press <code>\C</code> to change all C comments to C++ comments (assuming you are using backslash for your <Leader> key). |
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| + | |||
| + | ''Note:'' The mappings only handle single-line C comments. |
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| + | |||
| + | For example, if you press <code>\c</code> then the following C++ code: |
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| + | |||
| + | <pre> |
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| + | int i = 12; // this is a comment |
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| + | char c = 'A'; // and here is another comment |
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| + | </pre> |
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| + | |||
| + | changes to use C comments: |
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| + | |||
| + | <pre> |
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| + | int i = 12; /* this is a comment */ |
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| + | char c = 'A'; /* and here is another comment */ |
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| + | </pre> |
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| + | |||
| + | Here are the mappings. You could put these in your vimrc: |
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| + | |||
| + | <pre> |
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| + | " C++ //-comment to C /*-comment-*/ |
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| + | :noremap <Leader>c :%s://\(.*\):/*\1 */:<CR> |
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| + | |||
| + | " C /*-single-line-*/ to C++ //-comment |
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| + | :noremap <Leader>C :%s:/\*\(.\{-\}\)\s*\*/://\1:<CR> |
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| + | </pre> |
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| + | |||
| + | ==Comments== |
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| + | I tested, and even though the "dodgy" comment said it didn't work, it did work on my setup with no modifications. If you have any problems using this tip, please leave a comment below with exactly what it did wrong so we can fix the tip! --[[User:Fritzophrenic|Fritzophrenic]] 04:14, 13 July 2009 (UTC) |
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| + | ---- |
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| + | I just tried it and it failed because of something I don't understand about the <code>"...</code> Vim comment. When I removed the Vim comments, it worked fine. In more detail: Copy the four lines in the pre block to Vim and set up a test case. In Vim: use V movement to select the four lines, then y to copy, then @" to execute the copied commands. Bug: It doesn't work! Perhaps the comment on the first line masks out the remaining three lines?? |
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| + | |||
| + | Copying just the two :noremap lines and executing them caused it to work. |
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| + | |||
| + | Note that an inline C comment with code following will cause trouble. Say: |
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| + | <pre> |
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| + | i = myfunc(a, /* b, */ c); |
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| + | </pre> |
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| + | |||
| + | Converting the above to a C++ comment will eliminate the <code>c);</code>. [[User:JohnBeckett|JohnBeckett]] 07:47, 13 July 2009 (UTC) |
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| + | ---- |
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| + | You can't use @" to execute with the comments, or it will use the " like it was a register specification, since @" executes normal mode, not ex, commands. Using :@" (which you probably intended) works fine AFAICT. |
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| + | |||
| + | Saving the commands (with the comments) to a file and then :source-ing it also works fine. |
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| + | |||
| + | Good point about the inline C comments, maybe that was the original issue noted. Perhaps the mapping should replace the */ with a newline instead of simply removing it? |
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| + | |||
| + | The second mapping would become: |
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| + | <pre> |
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| + | :noremap <Leader>C :%s:/\*\(.\{-\}\)\s*\*/://\1\r:<CR> |
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| + | </pre> |
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| + | |||
| + | --[[User:Fritzophrenic|Fritzophrenic]] 14:56, 13 July 2009 (UTC) |
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| + | |||
| + | ---- |
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| + | Ah, yes. My brain said "the commands start with colon, therefore I can use <code>@"</code> rather than <code>:@"</code>, but as you say the comment lines will be interpreted as normal mode commands. [[User:JohnBeckett|JohnBeckett]] 22:46, 13 July 2009 (UTC) |
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| + | ---- |
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| + | Title should reflect that this only works with C and C++ |
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| + | |||
| + | --[[User:Diazleonardo|Diazleonardo]] ([[User talk:Diazleonardo|talk]]) 01:31, December 19, 2013 (UTC) |
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Latest revision as of 07:42, 31 May 2018
created 2001 · complexity intermediate · author slimzhao · version 5.7
With the following mappings, you can press \c to change all C++ comments to C comments, or press \C to change all C comments to C++ comments (assuming you are using backslash for your <Leader> key).
Note: The mappings only handle single-line C comments.
For example, if you press \c then the following C++ code:
int i = 12; // this is a comment char c = 'A'; // and here is another comment
changes to use C comments:
int i = 12; /* this is a comment */ char c = 'A'; /* and here is another comment */
Here are the mappings. You could put these in your vimrc:
" C++ //-comment to C /*-comment-*/
:noremap <Leader>c :%s://\(.*\):/*\1 */:<CR>
" C /*-single-line-*/ to C++ //-comment
:noremap <Leader>C :%s:/\*\(.\{-\}\)\s*\*/://\1:<CR>
Comments[]
I tested, and even though the "dodgy" comment said it didn't work, it did work on my setup with no modifications. If you have any problems using this tip, please leave a comment below with exactly what it did wrong so we can fix the tip! --Fritzophrenic 04:14, 13 July 2009 (UTC)
I just tried it and it failed because of something I don't understand about the "... Vim comment. When I removed the Vim comments, it worked fine. In more detail: Copy the four lines in the pre block to Vim and set up a test case. In Vim: use V movement to select the four lines, then y to copy, then @" to execute the copied commands. Bug: It doesn't work! Perhaps the comment on the first line masks out the remaining three lines??
Copying just the two :noremap lines and executing them caused it to work.
Note that an inline C comment with code following will cause trouble. Say:
i = myfunc(a, /* b, */ c);
Converting the above to a C++ comment will eliminate the c);. JohnBeckett 07:47, 13 July 2009 (UTC)
You can't use @" to execute with the comments, or it will use the " like it was a register specification, since @" executes normal mode, not ex, commands. Using :@" (which you probably intended) works fine AFAICT.
Saving the commands (with the comments) to a file and then :source-ing it also works fine.
Good point about the inline C comments, maybe that was the original issue noted. Perhaps the mapping should replace the */ with a newline instead of simply removing it?
The second mapping would become:
:noremap <Leader>C :%s:/\*\(.\{-\}\)\s*\*/://\1\r:<CR>
--Fritzophrenic 14:56, 13 July 2009 (UTC)
Ah, yes. My brain said "the commands start with colon, therefore I can use @" rather than :@", but as you say the comment lines will be interpreted as normal mode commands. JohnBeckett 22:46, 13 July 2009 (UTC)
Title should reflect that this only works with C and C++
--Diazleonardo (talk) 01:31, December 19, 2013 (UTC)