Proofreading
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@ -18,11 +18,11 @@ producing typographically sound printable documents that is mostly used by the
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scientific community (but [not
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only](https://www.ctan.org/pkg/latex-sciences-humaines)) as it allows writing
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mathematics formulae in a somewhat *not-that-much painful* way, is shipped with
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[bibliography engines](https://www.ctan.org/pkg/biblatex), allows easy
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[bibliography engines](https://www.ctan.org/pkg/biblatex), enables easy
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cross-referencing and automatically generates table of contents.
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It is based on a markup language that allows the writers to focus on the content
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of the document and leaves the typesetting to the software (at least most of the
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It is based on a markup language that allows writers to focus on the content of
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the document and leaves the typesetting to the software (at least most of the
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time).
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It moreover enjoys [many](https://ctan.org/) libraries that span from enabling
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[new features](https://ctan.org/pkg/algorithm2e) to [simpler
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@ -115,28 +115,29 @@ following plugins : `vimtex`, `nvim-lspconfig`, `nvim-cmp` and finally
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Now it is all good and done, but nothing is configured yet, and if you open a
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LaTeX file in this state, you will only enjoy the benefits of an unconfigured
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`vimtex`, which is already nice as is it, but not enough to achieve our goal.
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And it's a bit sad to have install three other plugins for nothing.
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And it's a bit sad to have installed three other plugins for nothing.
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# vimtex
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It will be a bit anti-climatic after the previous teasing, but we will use
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`vimtex` as vanilla as possible…
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However, we still need, to tell it to use `zathura` as a pdf viewer:
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We still need to tell it to use `zathura` as a pdf viewer:
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```lua
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vim.g.vimtex_view_method = "zathura"
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```
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This will allow `vimtex` to automatically open `zathura` after compilation,
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which is by default bound to `<LocalLeader>ll`. We now have to define
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This will allow `vimtex` to automatically open `zathura` upon compilation,
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which is bound to `<LocalLeader>ll` by default. Meaning that we have to define
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[`<LocalLeader>`](https://neovim.io/doc/user/map.html#%3CLocalLeader%3E), which
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I usually set to “`,`”:
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I usually set to be a comma: “`,`”:
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```lua
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vim.g.maplocalleader = ","
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```
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Now, you can use `,lv` to view the current line in `zathura`, yay.
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Now, you can use `,lv` to view the current line in `zathura`, and `,ll` to
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compile your document. Yay!
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More can be then done, such as using vimtex folds, which are not enabled by
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More can be then done, such as using vimtex folds, which are disabled by
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default (contrary to what [vim-latex](https://github.com/vim-latex/vim-latex)
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was doing, which is the former plugin I used):
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@ -154,13 +155,14 @@ is possible now:
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- Compile the document: `,ll`
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- This also automatically generates a [quickfix
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buffer](https://vimhelp.org/quickfix.txt.html) which is quite complete… a
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bit too much sometimes. I used it as is to hunt for over/underfull hboxes,
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but you can filter them out by setting the
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buffer](https://vimhelp.org/quickfix.txt.html) which is quite complete… even
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a tad bit too much sometimes.
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I used it as is to hunt for over/underfull hboxes, but you can filter them
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out by setting the
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[`vim.g.vimtex_quickfix_ignore_filters`](https://github.com/lervag/vimtex/blob/master/doc/vimtex.txt#L2365-L2378)
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variable.
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- View the current location in the document: `,lv`
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- Show table of content navigation: `,lt`
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- View the current location in the document: `,lv`.
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- Show table of content navigation: `,lt`.
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* Using latex-specific text objects such as `$` for math or `e` for environment
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(defined by `\begin{…}` and `\end{…}`).
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- Insert command/environment : `<F6>/<F7>` (in normal and visual mode; these are not very accessible, but can be remapped).
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@ -172,7 +174,8 @@ is possible now:
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tools](https://github.com/lervag/vimtex/blob/master/doc/vimtex.txt#L5577-L5610),
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such as [languagetool](https://languagetool.org/). I didn't check for
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[grammalecte](https://grammalecte.net/) support for French yet, but it may
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prove to be an interesting endeavour.
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prove to be an [interesting
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endeavour](https://upload.wikimedia.org/wikipedia/commons/9/9f/Rabbit_Hole.jpg).
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**Remark:** vimtex
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[claims](https://github.com/lervag/vimtex/blob/master/doc/vimtex.txt#L6549-L6624)
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@ -192,10 +195,10 @@ require("nvim-treesitter.configs").setup({
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Okay, that's all and good, but to quote [wikipedia](https://en.wikipedia.org):
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> The goal of the protocol is to allow programming language support to be
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> implemented and distributed independently of any given editor or IDE. In
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> the early 2020s LSP quickly became a "norm" for language intelligence tools
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> providers.
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> The goal of the [language server] protocol is to allow programming language
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> support to be implemented and distributed independently of any given editor or
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> IDE. In the early 2020s LSP quickly became a "norm" for language intelligence
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> tools providers.
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Source: <https://en.wikipedia.org/wiki/Language_Server_Protocol>
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@ -206,10 +209,10 @@ Let us now address these two issues.
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# Language Server Protocol
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Setting up language server protocol with Vim is a big morsel, and have been the
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topic of [some tuppervim
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topic of [some tuppervim's
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sessions](https://tuppervim.org/archives/pads/grenoble-2212.txt) at some point.
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I'll present here a minimal configuration that should work with `texlab`:
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Here follows a minimal configuration that should work with `texlab`:
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```lua
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-- Minimal lsp config
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@ -217,15 +220,16 @@ local lspconfig = require("lspconfig")
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lspconfig.texlab.setup {}
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```
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Okay, that's all and good, we can see errors and warnings decorating the file
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like Christmas decorations, but we can't use any of the LSP tools such as
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obtaining information on a bibliography key, or rename a macro.
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Easy, innit? Well, that's all and good, we can now see errors and warnings
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decorating the file like Christmas decorations, but we can not use any of the LSP
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tools such as obtaining information on a bibliography key, or rename a macro.
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However, let us just remark that texlab is a pretty minimal LSP server, and
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don't implement the myriads of possible functionalities.
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Henceforth, I just copy-pasted the default example from the [nvim-lspconfig
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does not implement the myriads of possible functionalities.
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Henceforth, I simply copy-pasted the default example from the [nvim-lspconfig
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Readme](https://github.com/neovim/nvim-lspconfig), tried the shortcuts one by
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one, and remove these which raised an error for “not implemented functionality”:
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one, and removed these which raised an error for “not implemented
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functionality” 🤡:
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```lua
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-- Use LspAttach autocommand to only map the following keys
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@ -247,7 +251,7 @@ vim.api.nvim_create_autocmd("LspAttach", {
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})
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```
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Which enables:
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Which thus enables:
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* Omnicompletion using LSP (I won't elaborate on this point, either you use it
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or not, but if you're using it, it may be useful to leave. I personally
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@ -256,22 +260,26 @@ Which enables:
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bibliography reference.
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* Show the information about the element under the cursor using `K`, it can be
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useful to quickly check a reference. Note that pressing `K` twice jumps into
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the floating window, which can be useful to copy an article title to search
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the floating window. That can prove useful to copy an article title to search
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for it somewhere else for instance.
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* Rename a macro/variable among **all** files in the current working documents
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using `gR`. It's a lifesaver when renaming macros as it avoids writing [regular
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* Rename a macro/variable among **all** files in the current working document
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using `gR`.
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It's a lifesaver when renaming macros as it avoids writing [regular
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expressions](https://xkcd.com/1171/).
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* Show each places where a reference appears with `gr` in a quickfix window. It
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allows checking where a formula is referenced or verifying if you cited
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yourself enough. I personally use
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* Show each place where a reference appears with `gr` in a
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[quickfix](https://vimhelp.org/quickfix.txt.html) window.
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It allows checking where a formula is referenced or verifying if you cited
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yourself enough.
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I personally use
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[telescope.nvim](https://github.com/nvim-telescope/telescope.nvim) for that
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purpose as it is more readable, but it goes beyond the scope of this blogpost.
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And that's it, we now simply have to enable the completion engine getting the
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configuration from the [nvim-cmp](https://github.com/hrsh7th/nvim-cmp) readme
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file and the [vimtex
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And that is about it.
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We now follow the same steps as before: enable the completion engine by fetching
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the configuration from the [nvim-cmp](https://github.com/hrsh7th/nvim-cmp)
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readme file and the [vimtex
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documentation](https://github.com/lervag/vimtex/blob/master/doc/vimtex.txt#L4586-L4625),
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then pruning it.
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then prune it.
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```lua
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-- nvim-cmp
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@ -296,22 +304,22 @@ but it's not the purpose of this blogpost.
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# Plug it into zathura
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Now that you tweaked your Neovim configuration so much that it now consumes 10GB
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of memory and takes 12s to launch using all your CPU cores, we can move to
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zathura.
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of memory and takes 12s to launch using all your 24 CPU cores, we can move onto
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configuring zathura.
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One of the reasons I moved from
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[vim-latex](https://github.com/vim-latex/vim-latex) to
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[vimtex](https://github.com/lervag/vimtex) is reverse search: to enable it with
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vim-latex, I was using [nvim-remote](https://github.com/mhinz/neovim-remote)
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`vim-latex`, I was using [nvim-remote](https://github.com/mhinz/neovim-remote)
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which is a wrapper for `nvim --listen` with a lot of constraints, while the most
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annoying one is that if I used reverse search from a detached[^1] zathura window
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without starting `nvr` first… then it is spawns the process which I cannot
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recover. Which usually happens when I'm in a rush to fix something quickly.
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Fortunately, this is a thing of the past as it is possible to directly send a
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directive to vimtex which will look for the corresponding buffer and then open
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the file at the right location while following its state (which can be viewed
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with `,li`).
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directive to `vimtex` upon which it will look for the corresponding buffer and
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then open the file at the corresponding location while following its state
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(which can be viewed with `,li`).
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To do so, the
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[documentation](https://github.com/lervag/vimtex/blob/master/doc/vimtex.txt#L5985-L6033)
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states that you have to launch the following command, where `%l` is the line in
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@ -321,22 +329,21 @@ the file and `%f` is the name of the file:
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nvim --headless -c "VimtexInverseSearch %l '%f'"
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```
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That's all and good, now we just have to tell Zathura which command to launch
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when doing backward search, which by default is done with `Ctrl` + `left mouse
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That's all and good, we just have to tell Zathura which command to launch when
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doing backward search, which by default is done with `Ctrl` + `left mouse
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button` on the portion of the text you want to view in the code.
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To do that, the
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following configuration that you can put in `$HOME/.config/zathura/zathurarc`
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should do the trick:
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To do that, the following configuration that you can put in
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`$HOME/.config/zathura/zathurarc` should do the trick:
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```
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set synctex true
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set synctex-editor-command "nvim --headless -c \"VimtexInverseSearch %{line} '%{input}'\""
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```
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And… that's it! You can now go to the location you want in your file document,
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compile it on the fly, scrutinise the warnings to look for overfull hboxes!
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And… that's it! You can now go to the location you want in your source file,
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compile it on the fly and scrutinise the warnings to look for overfull hboxes!
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[^1]: meaning that it is not owned by any terminal I have opened, I
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[^1]: Meaning that it is not owned by any terminal I have opened, I
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can otherwise still recover it somehow.
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# Conclusion
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@ -453,8 +460,8 @@ end
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That's nice and all but… it conflicts with the [vimtex default
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mappings](https://github.com/lervag/vimtex/blob/master/doc/vimtex.txt#L800-L912)
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such as `cse` to rename an environment which can be useful to replace an `align`
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with `align*` for instance. Meaning that going back one char would trigger vim
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to wait for the next input, which is kind of annoying.
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with `align*` for instance. Meaning that going back one character would trigger
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vim to wait for the next key input, which is kind of annoying.
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Hence the need to remap the vimtex default shortcuts starting with `c`, `t`, `s`
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or `r`.
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