I'm writing markdown in Vim and using this shortcut to set correct markdown image syntax:
nnoremap <leader>p :s/.*// <CR>
when pressing ,p, /path/to/image/img.jpg (in my vim text file) becomes
But I want to add after that this { width = *variable*% }, like this
{ width = *variable*% }
I made this little bash script (img.sh) that gives me the variable according to the image size:
#!/bin/bash
VAR=$(identify -format '%h' $1)
echo "scale=3; 300 * (100/$VAR)" | bc
If I do this in vim :r !img.sh /path/to/image/img.jpg I get a number in this case 32
I would want to launch this script with the shortcut above, I tried this:
nnoremap <leader>p :s/.*/{ width=/ <CR> :r !img.sh /path/to/image/img.jpg <CR> % }
I want you to help me to find a way to not type path to image to execute the script. Path to image is already written in the text if i could find a way to indicate to vim to place it in the shortcut after img.sh it would be great !
You can use a Vimscript expression on the replacement side of your :s command, that way you can refer to the text in the match (which is the path to the image) using submatch(0). You can use an expression on the replacement of a :s by beginning it with \=, see :help sub-replace-expression for more details.
Using a replacement expression, you can also use the system() function to call the external command, instead of using a separate :r !... command to read its output into the current buffer.
Putting it all together:
:s/.*/\='.']{ width='.trim(system('img.sh '.submatch(0))).' }'/
Or to add a mapping to it:
nnoremap <leader>p :s/.*/\='.']{ width='.trim(system('img.sh '.submatch(0))).' }'/<CR>
(NOTE: You might also want to add a :noh command to the end of your mapping, otherwise it will keep highlighting the search for .* which matches everything.)
nnoremap <leader>p :s/.*/\='.']{ width='.trim(system('img.sh '.submatch(0))).' }'/\|noh<CR>
Related
I am dealing with some multilingual data(English and Arabic) in a json file with a weird character i am not able to parse. I am not sure what the character is. I tried getting the ASCII value via vim and this is what i got
"38 0x26"
This is the status line in vim i used to get the value (http://vim.wikia.com/wiki/Showing_the_ASCII_value_of_the_current_character).
:set statusline=%<%f%h%m%r%=%b\ 0x%B\ \ %l,%c%V\ %P
This is how the character looks in vim -
I tried 'sed' and '.gsub' to replace this character unsuccessfully.
Is there a way where i can replace this character(preferably with .gsub ruby) with '&' or something else?
Thanks
try with something like
sed 's/[[:alpnum:][:space:]\[\]{}()\.\*\\\/_(AllAsciiVariationYouWant)/&/g;t
s/./?/g' YourFile
where (AllAsciiVariationYouWant) is all character that you want to keep as is (without the surrounding "()" )
JSON is encoded in UTF-8 (Unicode). If you're seeing funky-looking characters in your file, it's probably because your editor is not treating Unicode characters properly. That could be caused by the use of a terminal emulator that doesn't support Unicode; an incorrect $LANG setting; vim not being able to correctly determine the encoding of the file; and likely other reasons.
What terminal program are you using? What's your $LANG environment variable set to (echo $LANG)? If you're certain your terminal supports Unicode, try:
LANG=en_US.utf-8 vim your_file_here.json
(The above example assumes that U.S. English is appropriate for the file, which it may not be.)
As for replacing characters in the file, vim's substitution command can be used:
:%s/old text/new text/g
The above command will run the substitute command on all lines in the file (%), replacing every instance of "old text" with "new text". (The g at the end tells vim to replace every instance on a line, not just the first it finds.)
Say you had this text:
SOMETHING_XXXXXXXXXXXXXX_ELSE
SOMETHING_XXXXXXXXXXXXXX_ELSE2
SOMETHING_XXXXXXXXXXXXXX_ELSE3
SOMETHING_XXXXXXXXXXXXXX_ELSE4
And you wanted to replace all XXX..XXX with this word:
HELLOWORLD
If I go into visual mode, then yank the word, how could I then replace the XXX..XXX in the 4 lines above using cut and paste?
If I try, what happens is the X gets into my 'clipboard' and then I'm stuck to just typing it out manually.
I'm not sure if it will work in viemu, but in VIM you can do the following...
Using Yank and Paste
Yank the text to a specific register. Select the text in visual mode and use the command "ay to yank the text to the register a. Then when pasting call the command "ap, which pastes the contents of the a register.
Using Normal Command
But I would strongly prefer to use the normal command. Just select the lines
SOMETHING_XXXXXXXXXXXXXX_ELSE
SOMETHING_XXXXXXXXXXXXXX_ELSE2
SOMETHING_XXXXXXXXXXXXXX_ELSE3
SOMETHING_XXXXXXXXXXXXXX_ELSE4
using line visual mode (<C-v>) and then issue this command: :'<,'>normal fXct_HELLOWORLD. Then you'll have
SOMETHING_HELLOWORLD_ELSE
SOMETHING_HELLOWORLD_ELSE2
SOMETHING_HELLOWORLD_ELSE3
SOMETHING_HELLOWORLD_ELSE4
This means that it will run the command fXct_HELLOWORLD for each line. Let me explain the command:
fX - moves the cursor until the first X;
ct_ - deletes everything untill _ and puts you in insert mode;
HELLOWORLD - the word which will substitute XXXXXXXXXXXXXX;
One way would be to visually select all the code you want to replace and change it at once
Ctrl+v 3jt_cHELLOWORLD[Esc]
Note: it takes a couple of seconds for all lines to be updated
Another way to be by creating a macro:
record macro:
q10fXct_HELLOWORLD[esc]q
run macro on other lines:
j#1j#1j#1
q1 records a macro on character 1
#1 replays macro
But search and replace is a good alternative for your question
Highlight the four lines in visual mode, then
:'<,'>s/X\+/HELLOWORLD/g
Via this question: How do I use vim registers? I found ^R in command mode will paste from a register.
For example, with XXXX highlighted then yanked into the " register:
:s/^R"/HELLOWORLD/g
I want to write a vim function that includes pasting from the clipboard (windows if it matters)
I think it should be something like
function MyPastingFunc()
"+p "paste from clipboard
"do more stuff
endfunction
Of course the "+p is just a comment in the .vim file. How can I make this work?
You are looking for the :normal command:
function MyPastingFunc()
"paste from clipboard
normal! "+p
"do more stuff
endfunction
The ! is used to prevent vim also running user mappings that might be part of "+p.
If you always want to past into a new line you can use the :put command, e.g:
:put + will paste after the current line
:put! + will paste before the current line
:123 put + will paste after line 123
N.B. it will also move the cursor position to the first non-blank character of the inserted text. This may or may not be what you want.
You should be able to use the feedkeys function, whose name is pretty self-explanatory:
function MyPastingFunc()
call feedkeys("\"+p") "paste from clipboard
"do more stuff
endfunction
How do you prettify / align / format code in vi? What is the command?
I have pasted in a hunk of code and I need to have it all formatted/aligned... obviously I am a vi neophyte.
x
These commands in my answer work in vim. Most people who think they're using vi are using vim. To find out if your 'vi' is really 'vim', open vi and type :version -- if it's vim, it will say so. Otherwise you might just see a version number without the name of the program. Also, when you open vim for the first time you will usually see a splash screen of some sort that says "VIM - VI iMproved"...
Automatic Indentation
To turn auto-indentation on, make sure vim knows the file type you're editing (it usually automatically detects this from the file name extension, but might not figure it out with some file types). You can tell it the filetype using the menus for syntax highlighting. Then, do this:
:filetype indent on
You can disable auto-indentation with
:filetype indent off
Automatically adjusting/correcting indentation
In general, ={motion} will align code to an indentation level.
== align the current line
=i{ align the inner block
=% align to the matching parenthesis/bracket under the cursor
=14j or 14== align the next 14 lines
=G align to the end of the file
vG= same thing, align to the end of the
file (but using visual mode)
vjjj= align four lines (using visual mode)
Manual indentation
If vim is not guessing the indentation level correctly, there are two ways to change it:
If you are in normal mode (where everything is a command), do << to shift a line left, or >> to shift it right by one tab. You can do this with several lines by using the same movement commands I showed above (eg, >i{ indents the current inner code block).
If you are in insert mode, you can indent the line further (without moving the cursor) by doing a Ctrl-T, or un-indent one tab with Ctrl-D
Aligning equals signs, etc
If you want to align equals signs in a list of declarations, you should consider using this vim script: http://www.vim.org/scripts/script.php?script_id=294
Adjusting indentation/tab sizes
If you want vim to use spaces instead of tabs when it indents, run this command (or consider adding it to your vimrc file)
:set expandtab
To set how many spaces equal a tab, I usually do this:
:set expandtab softtabstop=3 tabstop=3 shiftwidth=3
tabstop - how many columns a tab counts for (affects display of existing tab characters)
shiftwidth - controls reindentation size with << and >>, among other commands.
softtabstop - how much space to insert when you press the tab key
expandtab - expand tab keys to spaces
But if you have to work with different amounts of tabs a lot, you could also use this function and keybinding:
function! Ktabs(tabsize)
execute "set softtabstop=" . a:tabsize . " tabstop=" . a:tabsize . " expandtab shiftwidth=" . a:tabsize
"set softtabstop=a:tabsize tabstop=a:tabsize expandtab shiftwidth=a:tabsize
endfunction
noremap <leader><Tab> :call Ktabs(3)<Left>
If you are editing a file with a mix of tabs and spaces, you may want to use this command after setting tab size:
:retab
={motion}
:h =
P.S. You shouldn't use vi if vim is available.
If manually adjusting indents I will open a visual block with V on the first or last line I want to re-indent, move to the brace containing the block, goto the other brace with % then shift the line with > or <
If indents are off by a lot I will shift everything all the way left with < and repeat it with . and then re-indent everything.
Another solution is to use the unix fmt command as described in Your problem with Vim is that you don't grok vi., {!}fmt
Emacs: C-U (79) # » a pretty 79 character length divider
VIM: 79-i-# » see above
Textmate: ????
Or is it just assumed that we'll make a Ruby call or have a snippet somewhere?
I would create a bundle command to do this.
You can take editor selection as input to your script, then replace it with the result of execution. This command, for example, will take a selected number and print the character '#' that number of times.
python -c "print '#' * $TM_SELECTED_TEXT"
Of course this example doesn't allow you to specify the character, but it gives you an idea of what's possible.
By taking the
python -c "print '#' * $TM_SELECTED_TEXT"
a step further, you can duplicate the examples you gave in the question.
Just make a snippet, called divider or something, set the tab trigger field to something appropriate '--' for example, then enter something like:
`python -c "print '_' * $TM_COLUMNS"`
Then when you type --⇥ (dash dash tab), you should get a divider of the correct width.
True, you've lost some of the terseness that you get from vim, but this is far easier to reuse, and you only have to type it once. You can also use whatever language you like.
Inspired by the other answers. Make a snippet with the following:
`python -c "print ':'.join('$TM_SELECTED_TEXT'.split(':')[:-1]) * int('$TM_SELECTED_TEXT'.split(':')[-1])"`
and optionally assign a key sequence to it, e.g. CTRL-SHIFT-R
If you type -x:4, select it, and call the snippet (by it's shortcut for example), you'll get "-x-x-x-x".
You can also use ::4 to obtain "::::".
The string you repeat is enclosed in single quotes, so to repeat ', you have to use \'.