VIM

Run a line in vim as shell command

~/.vimrc: nmap <silent><S-E> :exec '!'.getline('.')<CR>

Note: Now goto line which needs to be run and press Shift+e to run

Range and Filters

VIM allows filtering operation performed on its buffer. A filter can be a shell command or a script

SYNTAX: :<RANGE>!<FILTER>

E.g. : :%!source <script.sh>

script.sh: perl -ne 's/(.*)/cp \$REF_ROOT\/\1 \$WORK_ROOT\/\1/;print'

Check only one line of script is executed!!

VIM registers

VIM registers can be used as a temporary buffer to hold data of interest.

To access register (") is used followed by the register name and the command to perform on it.

E.g.:

To copy current line to a register "a" : "ayy

To paste the content of register "a" : "ap

To append a line to content of register "a" : "Ayy

To access system buffer (LINUX) : :+p

To check the registers : :reg

VIM functions

Few useful vim functions are listed below.

Since VIM function needs a :call function_name syntax to call it, there is a command mapper which will shorten or alias it.

Command name, like function names has to start with capital letter and unlike function names, command names cannot have any special characters

"""""""""""""""""" GIT status """"""""""""""""""

function! Git_status()

:new | 0read ! git status -s

endfunction

command! GitStatus :call Git_status

function! Git_status_cp()

:new | 0read ! git status -s | perl -ne 's/^\s*M\s+(.*)/cp \$REF_ROOT\/\1 \$REPO_ROOT\/\1/; print' | perl -ne 's/^\s*\?\?\s+(.*)/cp -i \$REF_ROOT\/\1 \$REPO_ROOT\/\1/; print'

endfunction

command GitStatusCp :call Git_status_cp

function! Git_status_cp_inline()

:%!git status -s | perl -ne 's/^\s*M\s+(.*)/cp \$REF_ROOT\/\1 \$REPO_ROOT\/\1/; print' | perl -ne 's/^\s*\?\?\s+(.*)/cp -i \$REF_ROOT\/\1 \$REPO_ROOT\/\1/; print'

endfunction

command GitStatusCpInline :call Git_status_cp_inline

"""""""""""""""""" GVIMDIFF """"""""""""""""""

function! Ref_diff()

:new | 0read ! cat # | perl -ne 's/(.*)/gvimdiff \$REF_ROOT\/\1 \$REPO_ROOT\/\1/;print'

endfunction

command! -nargs=0 Refdiff :call Ref_diff()

function! Ref_diff_inline()

:%!perl -ne 's/(.*)/gvimdiff \$REF_ROOT\/\1 \$REPO_ROOT\/\1/;print'

endfunction

command! -nargs=0 RefDiffInline :call Ref_diff_inline()

"""""""""""""""""" TKDIFF """"""""""""""""""

function! Ref_diff_tk()

:new | 0read ! cat # | perl -ne 's/(.*)/tkdiff \$REF_ROOT\/\1 \$REPO_ROOT\/\1/;print'

endfunction

command! -nargs=0 RefDiffTk :call Ref_diff_tk()

function! Ref_diff_tk_inline()

:%!perl -ne 's/(.*)/tkdiff \$REF_ROOT\/\1 \$REPO_ROOT\/\1/;print'

endfunction

command! -nargs=0 RefDiffTkInline :call Ref_diff_tk_inline()

"""""""""""""""""" P4MERGE """"""""""""""""""

function! Ref_diff_p4()

:new | 0read ! cat # | perl -ne 's/(.*)/p4merge \$REF_ROOT\/\1 \$REPO_ROOT\/\1/;print'

endfunction

command! -nargs=0 RefDiffP4 :call Ref_diff_p4()

function! Ref_diff_p4_inline()

:%!perl -ne 's/(.*)/p4merge \$REF_ROOT\/\1 \$REPO_ROOT\/\1/;print'

endfunction

command! -nargs=0 RefDiffP4Inline :call Ref_diff_p4_inline()

"""""""""""""""""" Run PERL """""""""""""""""""""

function! RunPerl()

:new | 0read ! perl #

endfunction

command! RunPerl :call RunPerl()

function! ExtractPortlist()

:new | 0read ! cat # | egrep "^ *input|^ *output|^ *inout" | awk '{print $NF;}' | sed 's/,//'

endfunction

command ExtractPortlist :call ExtractPortlist()

Check vim documentation for more info.

Section: *40.2* Defining command-line commands

Using Global command (g)

Global can be used to quickly manipulate text in vim. Few examples are as below,

Display pattern's context -> :g/PATTERN/z#.5

Delete all lines matching pattern -> :g/PATTERN/d

Copy all lines matching pattern to register -> :g/PATTERN/y A (Clear register before copying using qaq)

Copy matched lines to end of file -> :g/PATTERN/t$

Move matched lines to end of file -> :g/PATTERN/m$

Toggle Lowercase and Uppercase on search string

To toggle between cases on selected string, use the following:

:%s/$FIRST_STRING$$SECOND_STRING$/\L\1\U\2/

The above code converts the first selected string to lowercase and second to uppercase

Reference: http://vim.wikia.com/wiki/Switching_case_of_characters

Command history and access

VIM command history can be access by using "q:". The search history can be accessed by using "q/".

These are similar to how a command is entered using ":" and a search using "/".

To list out the command history use ":his". Similarly use ":his /" for searches.

The advantage of using the command-line window is that, all command history will be open in a new buffer. so it can be modified before running.

- In command window use ENTER to use the command or <CTRL-C> twice to close the command window

- The modified command can be yanked and by using :@"<ENTER> the command will be run on current buffer

- Use @: in normal mode to repeat the last command

- To retain the command history window as suggestion is posted on vim.wikia

:autocmd CmdwinEnter * nnoremap <buffer> <F5> :let g:CmdWindowLineMark=line(".")<CR><CR>q::execute "

VIM Highlight fixed pattern (along with search)

If there is a need to highlight certain pattern during code analysis (this highlight is along with the search pattern), then following code could be used.

# Here is an example to highlight all the state space in verilog i.e. the case values will be highlighted

:highlight hlCase term=italic,bold cterm=italic ctermbg=yellow ctermfg=darkblue gui=bold,italic guibg=yellow guifg=darkblue

:syntax match hlCase /^ *\w\w* *:/

:hi hlCase cterm=bold ctermbg=red guibg=LightYellow

:match hlCase /^ *\w\w* *:/

:hi hlCase

Column edit

Vim provides a column edit function in visual mode.

Enter Visual mode by pressing CTRL+v or CTRL+q (mapped)

Then either type SHIFT+i to insert or "c" to replace.

In insert mode, use "CTRL+r <register>"

* - From X clipboard

+ - From clipboard

" - From unnamed register

Sample vim tutorial - WIP

vim_column_editing.avi

Centos 7.x - Install gvim 8.x

Reference: https://www.programmerall.com/article/48681500995/

The default packages in centos for gvim is 7.4.x

To upgrade it, download the source code form below link.

https://github.com/vim/vim.git

Dependent packages:

$ sudo yum install ncurses-devel.x86_64

$ sudo yum install libXt-devel.x86_64

$ sudo yum install gtk2-devel.x86_64

Vim Configuration:

./configure --prefix=/usr/local --enable-pythoninterp=yes --enable-gui=auto --enable-cscope --enable-multibyte --enable-xim --enable-fontset --with-features=huge --with-x

Checklist

Check FZF plugin

set paste

set paste!

set nopaste