extensions: Add a zhihu Neovim extension

closes: #2740

Signed-off-by: Wu, Zhenyu <wuzhenyu@ustc.edu>
Signed-off-by: Christian Brabandt <cb@256bit.org>

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   test:
     name: Test
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         vim:

CHANGELOG.md

@@ -24,6 +24,7 @@ This is the Changelog for the vim-airline project.
   - coc extensions can also show additional status messages as well as the current function
   - [coc-git](https://github.com/neoclide/coc-git) extension integrated into hunks extension
   - rewrote parts using Vim9 Script for performance improvements
+  - [vim-obsession](https://github.com/tpope/vim-obsession) allow to set paused indicator
 - Other
   - Changed CI from travis-ci.org to GitHub Actions
   - Introduce Vim script static analysis using [reviewdog](https://github.com/reviewdog/action-vint)

autoload/airline/extensions.vim

@@ -526,6 +526,11 @@ function! airline#extensions#load()
     call add(s:loaded_ext, 'rufo')
   endif
 
+  if (get(g:, 'airline#extensions#zhihu#enabled', 1) && airline#util#has_zhihu())
+    call airline#extensions#zhihu#init(s:ext)
+    call add(s:loaded_ext, 'zhihu')
+  endif
+
 endfunction
 
 function! airline#extensions#get_loaded_extensions()

autoload/airline/extensions/fern.vim

@@ -27,12 +27,22 @@ endfunction
 function! airline#extensions#fern#configure_sections(win, context) abort
   let spc = g:airline_symbols.space
   let fri = fern#fri#parse(bufname(a:context.bufnr))
-  let abspath = substitute(fri.path, 'file://', '', '')
+  let abspath = ''
+  " Replace uses fern-replacer filetype, do not try to parse in that case
+  if &ft ==# 'fern' && fri.scheme ==# 'fern'
+    let abspath = fern#fri#to#filepath(fern#fri#parse(fri.path))
+  endif
   call a:win.add_section('airline_a', spc.'fern'.spc)
   if exists('*airline#extensions#branch#get_head')
     " because fern navigation changes an internal _fri_ and not the working directory
     " we need to give it some help so the branch name gets updated
-    execute 'lcd' abspath 
+    try
+      if &ft ==# 'fern'
+        execute 'lcd' fnameescape(abspath)
+      endif
+    catch /^Vim\%((\a\+)\)\=:E344:/
+      call a:win.add_section('airline_b', '')
+    endtry
     call a:win.add_section('airline_b', spc.'%{airline#extensions#branch#get_head()}'.spc)
   else
     call a:win.add_section('airline_b', '')

autoload/airline/extensions/obsession.vim

@@ -14,10 +14,14 @@ if !exists('g:airline#extensions#obsession#indicator_text')
   let g:airline#extensions#obsession#indicator_text = '$'
 endif
 
+if !exists('g:airline#extensions#obsession#indicator_text_paused')
+  let g:airline#extensions#obsession#indicator_text_paused = '' " vim-obsession defaults to 'S'
+endif
+
 function! airline#extensions#obsession#init(ext)
   call airline#parts#define_function('obsession', 'airline#extensions#obsession#get_status')
 endfunction
 
 function! airline#extensions#obsession#get_status()
-  return ObsessionStatus((g:airline#extensions#obsession#indicator_text . s:spc), '')
+  return ObsessionStatus((g:airline#extensions#obsession#indicator_text . s:spc), (g:airline#extensions#obsession#indicator_text_paused . s:spc))
 endfunction

autoload/airline/extensions/tabline/buffers.vim

@@ -4,8 +4,8 @@
 scriptencoding utf-8
 
 let s:spc = g:airline_symbols.space
-
 let s:current_bufnr = -1
+let s:current_tabnr = -1
 let s:current_modified = 0
 let s:current_tabline = ''
 let s:current_visible_buffers = []
@@ -49,14 +49,15 @@ function! airline#extensions#tabline#buffers#invalidate()
 endfunction
 
 function! airline#extensions#tabline#buffers#get()
+  let curbuf = bufnr('%')
+  let curtab = tabpagenr()
   try
     call <sid>map_keys()
   catch
     " no-op
   endtry
-  let cur = bufnr('%')
+  if curbuf == s:current_bufnr && curtab == s:current_tabnr && &columns == s:column_width
-  if cur == s:current_bufnr && &columns == s:column_width
+    if !g:airline_detect_modified || getbufvar(curbuf, '&modified') == s:current_modified
-    if !g:airline_detect_modified || getbufvar(cur, '&modified') == s:current_modified
       return s:current_tabline
     endif
   endif
@@ -77,10 +78,10 @@ function! airline#extensions#tabline#buffers#get()
   let b.overflow_group = 'airline_tabhid'
   let b.buffers = airline#extensions#tabline#buflist#list()
   if get(g:, 'airline#extensions#tabline#current_first', 0)
-    if index(b.buffers, cur) > -1
+    if index(b.buffers, curbuf) > -1
-      call remove(b.buffers, index(b.buffers, cur))
+      call remove(b.buffers, index(b.buffers, curbuf))
     endif
-    let b.buffers = [cur] + b.buffers
+    let b.buffers = [curbuf] + b.buffers
   endif
 
   function! b.get_group(i) dict
@@ -129,7 +130,7 @@ function! airline#extensions#tabline#buffers#get()
     endif
   endfunction
 
-  let current_buffer = max([index(b.buffers, cur), 0])
+  let current_buffer = max([index(b.buffers, curbuf), 0])
   let last_buffer = len(b.buffers) - 1
   call b.insert_titles(current_buffer, 0, last_buffer)
 
@@ -142,7 +143,8 @@ function! airline#extensions#tabline#buffers#get()
 
   call airline#extensions#tabline#add_tab_label(b)
 
-  let s:current_bufnr = cur
+  let s:current_bufnr = curbuf
+  let s:current_tabnr = curtab
   let s:column_width = &columns
   let s:current_tabline = b.build()
   let s:current_visible_buffers = copy(b.buffers)

autoload/airline/extensions/whitespace.vim

@@ -8,6 +8,7 @@ scriptencoding utf-8
 let s:show_message = get(g:, 'airline#extensions#whitespace#show_message', 1)
 let s:symbol = get(g:, 'airline#extensions#whitespace#symbol', g:airline_symbols.whitespace)
 let s:default_checks = ['indent', 'trailing', 'mixed-indent-file', 'conflicts']
+let s:searchcount = exists('*searchcount')
 
 let s:enabled = get(g:, 'airline#extensions#whitespace#enabled', 1)
 let s:skip_check_ft = {'make': ['indent', 'mixed-indent-file'],
@@ -51,7 +52,8 @@ endfunction
 
 function! s:conflict_marker()
   " Checks for git conflict markers
-  let annotation = '\%([0-9A-Za-z_.:]\+\)\?'
+  " space required for jj conflict marker: #2727
+  let annotation = '\%([0-9A-Za-z_.: ]\+\)\?'
   if match(['rst', 'markdown', 'rmd'], &ft) >= 0
     " rst filetypes use '=======' as header
     let pattern = '^\%(\%(<\{7} '.annotation. '\)\|\%(>\{7\} '.annotation.'\)\)$'
@@ -61,6 +63,19 @@ function! s:conflict_marker()
   return search(pattern, 'nw')
 endfunction
 
+function! s:conflict_marker_count()
+  if !s:searchcount
+    return 0
+  endif
+  " Checks for git conflict markers
+  " space required for jj conflict marker: #2727
+  let annotation = '\%([0-9A-Za-z_.: ]\+\)\?'
+  let pattern = '^<\{7} '.annotation. '$'
+  let cnt = searchcount(#{pattern: pattern, recompute: 1, timeout: 10})
+  return has_key(cnt, 'total') ? cnt.total : 0
+endfunction
+
+
 function! airline#extensions#whitespace#check()
   let max_lines = get(g:, 'airline#extensions#whitespace#max_lines', 20000)
   if &readonly || !&modifiable || !s:enabled || line('$') > max_lines
@@ -108,6 +123,7 @@ function! airline#extensions#whitespace#check()
     let conflicts = 0
     if index(checks, 'conflicts') > -1
       let conflicts = s:conflict_marker()
+      let conflicts_count = s:conflict_marker_count()
     endif
 
     if trailing != 0 || mixed != 0 || long != 0 || !empty(mixed_file) || conflicts != 0
@@ -138,6 +154,9 @@ function! airline#extensions#whitespace#check()
         if conflicts != 0
           let conflicts_fmt = get(g:, 'airline#extensions#whitespace#conflicts_format', '[%s]conflicts')
           let b:airline_whitespace_check .= space.printf(conflicts_fmt, conflicts)
+          if conflicts_count > 1
+            let b:airline_whitespace_check .= printf('*%d', conflicts_count)
+          endif
         endif
       endif
     endif

autoload/airline/extensions/zhihu.vim

@@ -0,0 +1,45 @@
+" MIT License. Copyright (c) 2026-2026 Wu Zhenyu et al
+" Plugin: https://github.com/pxwg/zhihu.nvim
+" vim: et ts=2 sts=2 sw=2
+
+scriptencoding utf-8
+
+if !airline#util#has_zhihu()
+  finish
+endif
+
+let s:has_percent_eval = v:version > 802 || (v:version == 802 && has("patch2854"))
+
+function! airline#extensions#zhihu#bufname() abort
+  let fmod = (exists("+autochdir") && &autochdir) ? ':p' : ':.'
+  let name = fnamemodify(bufname('%'), fmod)
+
+  if empty(name)
+    return ''
+  endif
+
+  if match(name, 'zhihu://') == -1
+    return s:has_percent_eval ? '%f' : name
+  endif
+
+  return get(get(b:, 'article', {}), 'title', name)
+endfunction
+
+function! airline#extensions#zhihu#init(ext) abort
+  let prct = s:has_percent_eval ? '%' : ''
+
+  if exists("+autochdir") && &autochdir
+    " if 'acd' is set, vim-airline uses the path section, so we need to redefine this here as well
+    if get(g:, 'airline_stl_path_style', 'default') ==# 'short'
+      call airline#parts#define_raw('path', '%<%{'. prct. 'pathshorten(airline#extensions#zhihu#bufname())' . prct . '}%m')
+    else
+      call airline#parts#define_raw('path', '%<%{' . prct . 'airline#extensions#zhihu#bufname()' . prct . '}%m')
+    endif
+  else
+    if get(g:, 'airline_stl_path_style', 'default') ==# 'short'
+      call airline#parts#define_raw('file', '%<%{' . prct . 'pathshorten(airline#extensions#zhihu#bufname())' . prct . '}%m')
+    else
+      call airline#parts#define_raw('file', '%<%{' . prct . 'airline#extensions#zhihu#bufname()' . prct . '}%m')
+    endif
+  endif
+endfunction

autoload/airline/init.vim

@@ -136,6 +136,7 @@ function! airline#init#bootstrap()
           \ 'notexists': "\u0246",
           \ 'dirty': "\u26a1",
           \ 'crypt': nr2char(0x1F512),
+          \ 'executable': "\u2699",
           \ }, 'keep')
     "  Note: If "\u2046" (Ɇ) does not show up, try to use "\u2204" (∄)
     if exists("*setcellwidths")
@@ -160,6 +161,7 @@ function! airline#init#bootstrap()
           \ 'notexists': "\u0246",
           \ 'crypt': nr2char(0x1F512),
           \ 'dirty': '!',
+          \ 'executable': "\u2699",
           \ }, 'keep')
   else
     " Symbols for ASCII terminals
@@ -177,6 +179,7 @@ function! airline#init#bootstrap()
           \ 'notexists': '?',
           \ 'crypt': 'cr',
           \ 'dirty': '!',
+          \ 'executable': 'x',
           \ }, 'keep')
   endif
 
@@ -189,6 +192,7 @@ function! airline#init#bootstrap()
   call airline#parts#define_function('crypt', 'airline#parts#crypt')
   call airline#parts#define_function('spell', 'airline#parts#spell')
   call airline#parts#define_function('filetype', 'airline#parts#filetype')
+  call airline#parts#define_function('executable', 'airline#parts#executable')
   call airline#parts#define('readonly', {
         \ 'function': 'airline#parts#readonly',
         \ 'accent': 'red',
@@ -253,7 +257,7 @@ endfunction
 function! airline#init#sections()
   let spc = g:airline_symbols.space
   if !exists('g:airline_section_a')
-    let g:airline_section_a = airline#section#create_left(['mode', 'crypt', 'paste', 'keymap', 'spell', 'capslock', 'xkblayout', 'iminsert'])
+    let g:airline_section_a = airline#section#create_left(['mode', 'crypt', 'paste', 'keymap', 'spell', 'capslock', 'xkblayout', 'iminsert', 'executable'])
   endif
   if !exists('g:airline_section_b')
     if airline#util#winwidth() > 99

autoload/airline/parts.vim

@@ -206,3 +206,11 @@ function! airline#parts#ffenc()
     return &fenc.bomb.noeolf.ff
   endif
 endfunction
+
+function! airline#parts#executable()
+  if exists("*getfperm") && getfperm(bufname('%')) =~ 'x'
+    return g:airline_symbols.executable
+  else
+    return ''
+  endif
+endfunction

autoload/airline/util.vim

@@ -149,6 +149,18 @@ function! airline#util#has_fugitive()
   return s:has_fugitive
 endfunction
 
+function! airline#util#has_zhihu()
+  if !has('nvim')
+    return 0
+  endif
+  try
+    call v:lua.require'zhihu'.setup()
+  catch
+    return 0
+  endtry
+  return 1
+endfunction
+
 function! airline#util#has_gina()
   if !exists("s:has_gina")
     let s:has_gina = (exists(':Gina') && v:version >= 800)

doc/airline.txt

@@ -1,4 +1,4 @@
-*airline.txt*  Lean and mean status/tabline that's light as air
+*airline.txt*	Lean and mean status/tabline that's light as air
 *airline* *vim-airline*
                   _                       _      _ _                        ~
            __   _(_)_ __ ___         __ _(_)_ __| (_)_ __   ___             ~
@@ -374,6 +374,7 @@ its contents. >
   let g:airline_symbols.colnr = ' ㏇:'
   let g:airline_symbols.colnr = ' ℅:'
   let g:airline_symbols.crypt = '🔒'
+  let g:airline_symbols.executable = '⚙'
   let g:airline_symbols.linenr = '☰'
   let g:airline_symbols.linenr = ' ␊:'
   let g:airline_symbols.linenr = ' ␤:'
@@ -427,7 +428,7 @@ window.
 >
   variable names                default contents
   ---------------------------------------------------------------------------
-  let g:airline_section_a       (mode, crypt, paste, spell, iminsert)
+  let g:airline_section_a       (mode, crypt, paste, spell, iminsert, executable)
   let g:airline_section_b       (hunks, branch)[*]
   let g:airline_section_c       (bufferline or filename, readonly)
   let g:airline_section_gutter  (csv)
@@ -998,8 +999,11 @@ vim-obsession <https://github.com/tpope/vim-obsession>
 * enable/disable vim-obsession integration >
   let g:airline#extensions#obsession#enabled = 1
 
-* set marked window indicator string >
+* set marked window indicator string when recording session>
   let g:airline#extensions#obsession#indicator_text = '$'
+
+* set marked window indicator string when recording session is paused>
+  let g:airline#extensions#obsession#indicator_text_paused = ''
 <
 -------------------------------------                    *airline-omnisharp*
 OmniSharp <https://github.com/OmniSharp/omnisharp-vim>
@@ -1207,7 +1211,7 @@ Note: Not displayed if the number of tabs is less than 1
   In default mode, when the variable is 1 Up to 10 mappings will be
   exposed. Note: As 10 and 1 have same prefix, we use 0 to replace 10. So,
   <leader>0 will jump to tenth buffer. Those mappings are not automatically
-  created, vim-airline just exposes those `<Plug>AirlineSeelctTab` keys
+  created, vim-airline just exposes those `<Plug>AirlineSelectTab` keys
   for you to map to a convenient key >
 
   let g:airline#extensions#tabline#buffer_idx_mode = 1
@@ -1879,6 +1883,13 @@ default: '> Zoomed'
 
 default: ''
 
+-------------------------------------                    *airline-zhihu*
+zhihu.nvim <https://github.com/pxwg/zhihu.nvim>
+
+* enable/disable zhihu integration >
+  let g:airline#extensions#zhihu#enabled = 1
+
+
 =============================================================================
 ADVANCED CUSTOMIZATION                      *airline-advanced-customization*
 
@@ -1918,6 +1929,7 @@ The following list of parts are predefined by vim-airline.
 * `iminsert`     displays the current insert method
 * `paste`        displays the paste indicator
 * `crypt`        displays the crypted indicator
+* `exectuable`   displays the executable indicator
 * `spell`        displays the spell indicator
 * `filetype`     displays the file type
 * `readonly`     displays the read only indicator

test/init.vimspec

@@ -47,7 +47,7 @@ Describe init.vim
 
   It section z should be line numbers
     Assert Match(g:airline_section_z, '%p%%')
-    Assert Match(g:airline_section_z, '%l')
+    Assert Match(g:airline_section_z, '%2l')
     Assert Match(g:airline_section_z, '%v')
   End