tabline: expose <Plug>AirlineSelectFirstTab/<Plug>AirlineSelectLastTab

closes: #2700

Signed-off-by: Christian Brabandt <cb@256bit.org>

CHANGELOG.md

@@ -42,6 +42,8 @@ This is the Changelog for the vim-airline project.
   - Support multi-line statusline (Vim only)
   - Support clickable buffers in Vim
   - Support for showing `repo:/path/file` path like style using the `gitrepo` style
+  - tabline: Expose `<Plug>AirlineSelectFirstTab` and `<Plug>AirlineSelectLastTab`
+  - tabline: Add a new `buffer_idx_mode` that adds a lot more mappings.
 - 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/tabline/buffers.vim

@@ -221,6 +221,8 @@ function! s:map_keys()
     endif
     noremap <silent> <Plug>AirlineSelectPrevTab :<C-u>call <SID>jump_to_tab(-v:count1)<CR>
     noremap <silent> <Plug>AirlineSelectNextTab :<C-u>call <SID>jump_to_tab(v:count1)<CR>
+    noremap <silent> <Plug>AirlineSelectFirstTab :<C-u>call <SID>select_tab(0)<CR>
+    noremap <silent> <Plug>AirlineSelectLastTab :<C-u>call <SID>select_tab(len(airline#extensions#tabline#buflist#list()) - 1)<CR>
     " Enable this for debugging
     " com! AirlineBufferList :echo map(copy(s:current_visible_buffers), {i,k -> k.": ".bufname(k)})
   endif

autoload/airline/extensions/tabline/tabs.vim

@@ -125,6 +125,8 @@ function! airline#extensions#tabline#tabs#map_keys()
   noremap <silent> <Plug>AirlineSelectPrevTab gT
   " tabn {count} goes to count tab does not go {count} tab pages forward!
   noremap <silent> <Plug>AirlineSelectNextTab :<C-U>exe repeat(':tabn\|', v:count1)<cr>
+  noremap <silent> <Plug>AirlineSelectFirstTab :<C-u>:tabfirst<CR>
+  noremap <silent> <Plug>AirlineSelectLastTab  :<C-u>:tablast<CR>
 endfunction
 
 function! airline#extensions#tabline#tabs#tabnr_formatter(nr, i) abort

doc/airline.txt

@@ -1279,9 +1279,14 @@ Note: Not displayed if the number of tabs is less than 1
   This matches that of the numbering scheme of |:buffers|, letting
   `<Plug>AirlineSelectTab67` to reference buffer 67.
 
-  Note: To avoid ambiguity, there won't be <Plug>AirlineSelectTab1
-  - <Plug>AirlineSelectTab9 maps in mode 2 and 3.
+  Note: To avoid ambiguity, there won't be
+  <Plug>AirlineSelectTab1 - <Plug>AirlineSelectTab9
+  maps in mode 2 and 3.
 
+  To go to the very first/last buffer, you can use: >
+  nmap <Leader>FT <Plug>AirlineSelectFirstTab
+  nmap <Leader>LT <Plug>AirlineSelectLastTab
+<
   Note: Mappings will be ignored for filetypes that match
   `g:airline#extensions#tabline#keymap_ignored_filetypes`.