fix luasnip complete and move it to reasonable place (#235)

Co-authored-by: curtain <kaleidoscope@163.com>

lua/mappings.lua

@@ -62,67 +62,6 @@ M.comment_nvim = function()
     map("v", m, ":CommentToggle<CR>", opt)
 end
 
--- compe stuff
-local t = function(str)
-    return vim.api.nvim_replace_termcodes(str, true, true, true)
-end
-
-local check_back_space = function()
-    local col = vim.fn.col(".") - 1
-    if col == 0 or vim.fn.getline("."):sub(col, col):match("%s") then
-        return true
-    else
-        return false
-    end
-end
-
-_G.tab_complete = function()
-    if vim.fn.pumvisible() == 1 then
-        return t "<C-n>"
-    elseif check_back_space() then
-        return t "<Tab>"
-    else
-        return vim.fn["compe#complete"]()
-    end
-end
-
-_G.s_tab_complete = function()
-    if vim.fn.pumvisible() == 1 then
-        return t "<C-p>"
-    elseif vim.fn.call("vsnip#jumpable", {-1}) == 1 then
-        return t "<Plug>(vsnip-jump-prev)"
-    else
-        return t "<S-Tab>"
-    end
-end
-
-function _G.completions()
-    local npairs
-    if
-        not pcall(
-            function()
-                npairs = require "nvim-autopairs"
-            end
-        )
-     then
-        return
-    end
-
-    if vim.fn.pumvisible() == 1 then
-        if vim.fn.complete_info()["selected"] ~= -1 then
-            return vim.fn["compe#confirm"]("<CR>")
-        end
-    end
-    return npairs.check_break_line_char()
-end
-
---  compe mappings
-map("i", "<Tab>", "v:lua.tab_complete()", {expr = true})
-map("s", "<Tab>", "v:lua.tab_complete()", {expr = true})
-map("i", "<S-Tab>", "v:lua.s_tab_complete()", {expr = true})
-map("s", "<S-Tab>", "v:lua.s_tab_complete()", {expr = true})
-map("i", "<CR>", "v:lua.completions()", {expr = true})
-
 M.nvimtree = function()
     local m = user_map.nvimtree.treetoggle
 

lua/plugins/luasnip.lua

@@ -3,6 +3,67 @@ if not present then
     return
 end
 
+local t = function(str)
+    return vim.api.nvim_replace_termcodes(str, true, true, true)
+end
+
+local check_back_space = function()
+    local col = vim.fn.col('.') - 1
+    if col == 0 or vim.fn.getline('.'):sub(col, col):match('%s') then
+        return true
+    else
+        return false
+    end
+end
+
+_G.tab_complete = function()
+    if vim.fn.pumvisible() == 1 then
+        return t "<C-n>"
+    elseif luasnip and luasnip.expand_or_jumpable() then
+        return t "<Plug>luasnip-expand-or-jump"
+    elseif check_back_space() then
+        return t "<Tab>"
+    else
+        return vim.fn['compe#complete']()
+    end
+end
+_G.s_tab_complete = function()
+    if vim.fn.pumvisible() == 1 then
+        return t "<C-p>"
+    elseif luasnip and luasnip.jumpable(-1) then
+        return t "<Plug>luasnip-jump-prev"
+    else
+        return t "<S-Tab>"
+    end
+end
+
+_G.completions = function()
+    local npairs
+    if
+        not pcall(
+            function()
+                npairs = require "nvim-autopairs"
+            end
+        )
+     then
+        return
+    end
+
+    if vim.fn.pumvisible() == 1 then
+        if vim.fn.complete_info()["selected"] ~= -1 then
+            return vim.fn["compe#confirm"]("<CR>")
+        end
+    end
+    return npairs.check_break_line_char()
+end
+
+
+vim.api.nvim_set_keymap("i", "<Tab>", "v:lua.tab_complete()", {expr = true})
+vim.api.nvim_set_keymap("s", "<Tab>", "v:lua.tab_complete()", {expr = true})
+vim.api.nvim_set_keymap("i", "<S-Tab>", "v:lua.s_tab_complete()", {expr = true})
+vim.api.nvim_set_keymap("s", "<S-Tab>", "v:lua.s_tab_complete()", {expr = true})
+vim.api.nvim_set_keymap("i", "<CR>", "v:lua.completions()", {expr = true})
+
 luasnip.config.set_config(
     {
         history = true,