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created September 6, 2011 · complexity basic · author Raimondi · version 7.0
Sometimes a basic feature of Vim does not work as expected. The following instructions can help eliminate possible sources of the problem.
Check Vim without customizationsEdit
Run the following command from your terminal and see if the problem persists (if wanted, replace "
vim" with "
vim -N -u NONE -i NONE
You will need to manually enable anything like filetype detection, syntax highlighting, etc. that are needed to troubleshoot the problem.
- If the problem persists, that means the problem could be in the Vim executable or official runtime files. Go and verify the enabled features.
- If the problem went away, it is time to test your vimrc.
Verify required featuresEdit
Check the feature you need was enabled when Vim was built. Use the
:version command to see if that feature is enabled.
- Some/any needed features are disabled. Build Vim with desired feature enabled or use your package manager to install a Vim version that has them enabled.
- All needed features are enabled. Consider 3rd party libraries. For example, the command-T plugin requires that your system ruby be the same as that which was linked with Vim.
Check Vim with just your .vimrcEdit
Run Vim with following arguments and see if the problem disappears:
vim -N --noplugin -i NONE
- If the problem persists, the reason of your pain is inside your vimrc.
- If the problem went away, the next step is to rule out the plugins.
Check Vim with just your pluginsEdit
Back to your terminal and run Vim like this:
vim -N -u NORC -i NONE
- If the problem persists, the issue is related to one or more plugins, find out which.
- If the problem went away, maybe the problem is that Vim is running in compatible mode, verify that with
:verbose set cp?to also see where it is being set.
If you have no idea which plugin(s) might be causing the problem, use a binary search method to isolate the errant plugin(s).
- Disable half of your plugins and retest Vim.
- Test again to see if the problem persists or has gone away.
- If the problem went away, the disabled set contain your bad plugin. Keep half of the disabled plugins disabled and re-enable the other half. You now have less disabled plugins to test. Go back to step 2.
- If the problem persists, the enabled set contain your bad plugin. Disable half of your remaining plugins and keep the other remaining half enabled. You now have less enabled plugins to test. Go back to step 2.
- If you can isolate one or a set of plugins causing the problem:
- Make sure you have the latest version of those plugins installed.
- Check the plugin page to see if there are any known conflicts with other plugins or known failures for a given Vim version.
- Consider replacing the plugin with a competing solution.
The VimLint plugin was designed to help identify erroneous vimrc settings.
- Ensure you have a personal vimrc file (file
~/.vimrcon Linux, or
- Ensure your vimrc contains at least:
set nocompatible syntax on filetype plugin indent on set hidden
- Ensure your vimrc does not have:
set compatible or set cp set smartindent or set si set cindent or set cin set lisp set gdefault or set gd set edcompatible or set ed set exrc or set ex set insertmode or set im set noloadplugins or set nolpl set nomagic set nomodeline or set noml
- If Vim finds the command
finishanywhere in your vimrc it will stop sourcing the rest of the file. So you can use it to do a binary search as described in Plugins to identify the problematic line.
:echo $SHELLis correct. You will need to use a POSIX shell for full Vim compatibility. The fish shell is known to not be compatible.
:echo $TERMis correct. Check TermSettings for your terminal type.
A custom mapping may not work because it was overwritten by a plugin. The following command will tell you if
aa is mapped to something and, if so, where the mapping was created.
:verbose map aa
Use the appropriate
:map command for the mapping you are testing, see
:help :map-modes for more details.
Many plugins change options when they are sourced, filetype is set, etc. So, you might find yourself wondering why an option is not set as you expect. From inside Vim, type this command:
:verbose set myoption?
That displays the value of the given option and where it was set. Replace
myoption with the option being tested, and remember to include the "
?" (the query causes the value to be displayed; omitting it might set the option).
For local options that inherit its value, that command would not specify where the value was set. What to do in this case?
Should explain the use of the
-i flag, and also mention that the viminfo file can be the cause of issues (especially slowness in loading apparently).
Also need to talk about how to get various plugin managers to start up without your .vimrc when doing -u NORC.