Ctags not working - ctags

I'm trying to understand a large code base. I need ctags to generate some tags so that I can jump to the function definition with ctrl + ].
Unfortunately, after running ctags -R * in the source diretory where some python script files resides, then vi open the python script, then cursor on which I want to jump to definition of, but all prompts E426: tag not found.
I tried creating a ~/.vimrc file, and adding set tags=~/Downloads/fast-rcnn/tools/tags, but still does not work, and when I open the generated tags file in the directory, seems only have tens of lines.
Can someone help me?

turns out that set tags=~/Downloads/fast-rcnn/tools/tags missing colon :, adding it solve the problem, and follow the advice of Vim and Ctags tips and tricks
I change it to :set tags=./tags;/

Related

ctags error "format error in tags file"

I work on c code base in Linux. I use perforce as source code repository. I had been using ctags and it was working fine. But recently when press ctrl ] in some symbol then I get below error. I removed tags file and recreated the tags file but the problem didn't solve. Any idea on how to resolve this issue?
E431: Format error in tags file "tags"
Before byte 53035586
If you are just using the ctags -R then try specifying the c language in the command like below. I had the same problem and when I specified the c language while generating the tags, the problem got resolved.
ctags -R --languages=C
There may be tags with large names in your repo. If you can live without those included in your ctags file, you can avoid this error and use rest of the ctags.
To avoid the files/folders, use this syntax
**ctags -R -V --exclude=#/path/to/ctags_ignore_file ./ **
ctags_ignore_file has the list of Folders to be excluded. You can use wildcard entries too.
This solved my problem.
TLDR; add export CSCOPE_EDITOR=vim to ~/.bashrc and close your terminal window.
In my case, setting vim as the default editor for cscope fixed the issue:
echo "export CSCOPE_EDITOR=vim" >> ~/.bashrc # Append to .bashrc
source ~/.bashrc # Load .bashrc into the current shell
After this, you may also use the following commands in your project directory for a quick reconfiguration of cscope and ctags:
ctags -R
cscope -R

pathogen vim indent-guides not showing

I happened to already have pathogen installed and running with JSHint and Janus, which works just fine. However, when I try to use the plug-in vim-indent-guide, it does not show at all.
According to pathogen as well as the github for the vim indent guides, it would seem that the only really necessary step would be to clone the repository into my ~/.vim/bundles. I am aware that the .vim file of the add-on needs to be in a subdirectory called plugins, which I confirmed. My indent-guides are installed into ~/.vim/bundle/vim-indent-guides/plugin/indent_guides.vim. I also am using VIM 7.3 which should mean version is not a problem.
To test my theory that pathogen is working, I made a file that would clearly raise a JSHint error
Given that assumption was proven correct, I tested to see if the files were loading, using :scriptnames in the file I was editing. Sure enough, I see two files there matching the name
104: ~/.vim/bundle/vim-indent-guides/plugin/indent_guides.vim
105: ~/.vim/bundle/vim-indent-guides/autoload/indent_guides.vim
however, I see no visible results of tabs or spacing in any files.
Perhaps it is a display issue or Janus "overwriting" this add-on's settings, but to be honest, I'm stumped. Anyone have any ideas?
I don't have a colorscheme yet and this is what i've added to the .vimrc file after installation:
...
" Indent Guides Settings
let g:indent_guides_enable_on_vim_startup = 1
let g:indent_guides_auto_colors = 0
let g:indent_guides_guide_size = 1
autocmd VimEnter,Colorscheme * :hi IndentGuidesOdd guibg=red ctermbg=3
autocmd VimEnter,Colorscheme * :hi IndentGuidesEven guibg=green ctermbg=4
colorscheme default
...
Good Luck.
Check your $TERM variable by echo $TERM in bash. If TERM=xterm instead of TERM=xterm-256color, it only handle 8 colors (instead of 256) and the colors will not be displayed properly.
You may fix to the correct value by this line in ~/.profile:
export TERM=xterm-256color
By doing so, re-enter vim and type :set t_Co should show t_Co=256, which is correct.

Setting up vim autocomplete for the Go programming language

EDIT:
I was generally interested to know how people had their go autocomplete set up for vim and was looking for advice on it.
Related to my original question, I think I know I can just go to:
https://github.com/nsf/gocode
copy the files that they provide there and just start using the vim autocomplete. However, I wanted to know what people thought and how the go community has the vim autocomplete set up.
Also, I have followed the intructions as were posted there and I still cannot make the autocompletion work for my go in vim. So I am looking for other alternatives or ideas on how to make it work. Not sure what the problem is. Currently when I try to autocomplete it simply writes the word PANIC instead of showing me the options for autocompletion.
ORIGINAL:
I was trying to set up my vim such that it could auto complete the Go programming language, however, I was following the instructions in the following page:
https://github.com/nsf/gocode
and I was not sure what they meant and I was a little scared of maybe changing my vim set up in a way that might be damaging by doing it wrongly.
The first thing that confused me is it says:
Install official Go vim scripts from $GOROOT/misc/vim. If you did that already, proceed to the step 2.
However, I was not sure what that even meant. I did go to that directory in my terminal and read the readme.txt file and I it said how to activate the syntax highlighting which I already had anyway. Is that everything I have to do for that step?
On step 2 it says:
do:
vim/update.sh
They actually provide the code that update.sh is but I was not sure what the beginning of the cp command meant i.e. its:
#!/bin/sh
mkdir -p "$HOME/.vim/autoload"
mkdir -p "$HOME/.vim/ftplugin/go"
cp "${0%/*}/autoload/gocomplete.vim" "$HOME/.vim/autoload"
cp "${0%/*}/ftplugin/go/gocomplete.vim" "$HOME/.vim/ftplugin/go"
But what does the ${0%/*} part do? and even if I know what the update.sh is, where do I even run this, since this vim/update.sh is done at a relative path?
I know update.sh wants me to copy some files to $HOME/.vim/ftplugin/go and $HOME/.vim/autoload, but I even did a find from ~ and couldn't find such files, so I am unsure on what to copy. I know where it should go, but not where the file even is. Does someone know where those files are or an easier or more detailed explanation on how to make vim auto-complete for go?
Thanks for the help in advance! :)
Some of the problems that I have discovered that I have, not sure if its expected, but in the $GOROOt/misc/vim/ftplugin/go I do not have the gocomplete.vim file at all. I have other stuff that seems irrelevent like an fmt.vim import.vim and a test.sh file.
But the odd thing is that at $GOROOt/misc/autoload I do not have the gocomplete.vim file but I instead have a complete.vim file. Not sure if that the same or why the name of the file would have changed. Anyway has their go autocomplete set up and mind sharing what they have and if they know what the differences might be with what I have encountered? Thanks!
ADDITION to Question
I am also generally interested in how other people have their auto-complete set up for their go in vim. Feel free to share that too!
Have you executed the update.sh command already? I'm pretty confident that it will work.
All of your Vim configuration is stored in ~/.vim/, ~/.vimrc and ~/.gvimrc (with Vim 7.4, you can put the last two also inside the first directory). To backup your Vim configuration, just store those somewhere (or put all of your dotfiles under version control, as many now do).
The ${0%/*} manipulates the script's file name ($0) like dirname does: It cuts off the script file name itself (everything at the end * until the last /). With this, you can invoke the script from anywhere, e.g. $GOROOT/misc/vim/update.sh or cd misc; vim/update.sh or cd misc/vim; ./update.sh.
The script also ensures that the autoload and ftplugin subdirs exist, and creates them if they don't yet. Just give it a try!

Textmate tutorial terminal mac-osx

I have installed Textmate editor on my terminal and I am looking for some tutorial to discover Textmate's command lines ? Does anyone has a some links ?
Best,
Newben
The textmate bin that is optionally installed for command line access is really nothing but a simple manner to open files in the OSX gui application.
That said, there are a few handy shortcuts. -w issues a "wait" while opening the file, thus following commands in a sequence will wait until the document is closed to execute. For example:
alias bashrc="mate -w ~/.bashrc; source ~/.bashrc"
That said, if you are looking for a good command set for using within the gui itself, let me know and I will fill in a list of handy commands (it has been my default editor for 6 years now).
Edit: Here are the beginnings of my TextMate docs. I currently have the Cheat Sheet in a state that should prove useful. I will be adding to it and writing up some more extensive docs in the near future.
TextMate Cheat Sheet
You can invoke it from the command line with:
mate path/to/file/you/want/to/edit.txt
You can use more than one file, space separated. To see more options do:
mate --help
This if you installed the commandline option. which you can also do from preferences at any time (its just a symlink)

How can I invoke VIM with C-X e for long, complex, tricky commands?

I found an awesome tip here. You can "[r]apidly invoke an editor to write a long, complex, or tricky command". However, when I press the key combination above, I get Emacs open. I would like to switch it to Vim. How can I invoke Vim with C-X e?
[1. Problem SOLVED by Brian Cambell]
export EDITOR=vim
Add to your .bashrc or appropriate shell rc file
[2. Problem SOLVED thanks to Pax]
I was unable to get the tricky command back to Bash. The errors were:
> Error detected while processing BufRead Auto commands for "*":
> E117: Unknown function: JumpToLastPosition
Quotes in .vimrc solved the second problem. I am still unsure about the part in my .vimrc:
" augroup misc
" autocmd!
" autocmd BufReadPost * call JumpToLastPosition()
" autocmd FileChangedShell * call WarningMsg("File changed outside of vim")
" augroup end
[3. Problem]
What do the above part in .vimrc do?
On most Linux installs (all the ones I tested), bash recognizes both the Emacs and Vi command history keys (or you can use "set -o vi" to force it).
So, you can just use the vi-mode "<ESC>v" to to enter visual mode, this will start editing in a Vim session.
To run the command, you just save and exit from Vim ("ZZ" or ":wq"). To cancel the command, you need to delete the contents, save and exit ("1GdGZZ").
In addition to running it by exiting, you can also save it while in the editor to another location (":w /tmp/myscript").
Keep in mind that visual mode will work with the currently selected line so you don't have to start with a blank command ("<ESC>v"). You can use the normal vi-mode tools to select a line from the history first and then enter visual mode ("<ESC>kv" for last command, "<ESC>/grep<ENTER>nnv" for third-last grep command and so on).
Using this method has the advantage of not changing the "EDITOR" variable which may be used for other things (unless you want Vim for everything, which is a very sensible position to take IMNSHO).
Update:
Regarding your error, posted after the question:
JumpToLastPosition() is the function called by Vim for all files to put the cursor where it was when you last edited the file. I'm going to assume you're actually getting this error when the editing starts, not when you exit, since this is the auto function following a buffer read.
Can you start a "normal" vim session ("vim xx.txt" and then "vim xx") without this error occurring? You may find you get the same problem (and possibly only on the last one).
If you do have the same problem, you need to look at your startup files. It's possible the autocmd for BufRead is broken somehow. Have a look inside your vimrc and you filetype.vim files to see where that function is called and/or defined (I suspect it's called but not defined and that may be a mismatch between the two files or one of them has been damaged).
export EDITOR=vim
Add to your .bashrc or appropriate shell rc file
The link that you provided contains the answer:
Next time you are using your shell, try typing ctrl-x e (that is holding control key press x and then e). The shell will take what you've written on the command line thus far and paste it into the editor specified by $EDITOR.
You need to set the EDITOR environment variable (like #Brian Campbell)

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