feat: extract conceal for newline out of fancy

refer: #3237

Author: lervag

autoload/vimtex/options.vim

@@ -339,6 +339,7 @@ function! vimtex#options#init() abort " {{{1
         \ 'ligatures': 1,
         \ 'cites': 1,
         \ 'fancy': 1,
+        \ 'texTabularChar': 1,
         \ 'spacing': 1,
         \ 'greek': 1,
         \ 'math_bounds': 1,

autoload/vimtex/syntax/core.vim

@@ -704,6 +704,11 @@ function! vimtex#syntax#core#init_rules() abort " {{{1
       call s:match_conceal_fancy()
     endif
 
+    " Conceal tabular characters
+    if g:vimtex_syntax_conceal.texTabularChar
+      syntax match texTabularChar "\\\\" conceal cchar=⏎
+    endif
+
     " Conceal spacing commands
     if g:vimtex_syntax_conceal.spacing
       call s:match_conceal_spacing()
@@ -2488,7 +2493,6 @@ function! s:match_conceal_fancy() abort " {{{1
   syntax match texCmd         "\%#=1\\dots\>"  conceal cchar=…
   syntax match texCmd         "\%#=1\\slash\>" conceal cchar=/
   syntax match texCmd         "\%#=1\\ldots\>" conceal cchar=…
-  syntax match texTabularChar "\\\\"      conceal cchar=⏎
 
   syntax match texCmdItem     "\%#=1\\item\>"  conceal cchar=○
         \ nextgroup=texItemLabelConcealed

doc/vimtex.txt

@@ -2519,6 +2519,9 @@ OPTIONS                                                        *vimtex-options*
     fancy ~
       Some extra fancy replacements, e.g. `\item` --> ○.
 
+    texTabularChar ~
+      Conceal tabular line breaks, i.e. `\\` --> `⏎`.
+
     spacing ~
       Conceal spacing commands such as `\quad` and `\hspace{1em}` in both
       normal mode and math mode.
@@ -2569,6 +2572,7 @@ OPTIONS                                                        *vimtex-options*
           \ 'ligatures': 1,
           \ 'cites': 1,
           \ 'fancy': 1,
+          \ 'texTabularChar': 1,
           \ 'spacing': 1,
           \ 'greek': 1,
           \ 'math_bounds': 1,