feat(lua): vim.text.indent()

Problem:
Indenting text is a common task in plugins/scripts for
presentation/formatting, yet vim has no way of doing it (especially
"dedent", and especially non-buffer text).

Solution:
Introduce `vim.text.indent()`. It sets the *exact* indentation because
that's a more difficult (and thus more useful) task than merely
"increasing the current indent" (which is somewhat easy with a `gsub()`
one-liner).

3 files changed, 24 insertions, 24 deletions

diff --git a/test/functional/treesitter/highlight_spec.lua b/test/functional/treesitter/highlight_spec.lua
index 6d59368a24..f3a321aa88 100644
--- a/test/functional/treesitter/highlight_spec.lua
+++ b/test/functional/treesitter/highlight_spec.lua
@@ -786,9 +786,9 @@ describe('treesitter highlighting (C)', function()
 
     screen:expect({
       grid = [[
-          {26:int x = 4;}                                                     |
-          {26:int y = 5;}                                                     |
-          {26:int z = 6;}                                                     |
+        {26:int x = 4;}                                                       |
+        {26:int y = 5;}                                                       |
+        {26:int z = 6;}                                                       |
         ^                                                                 |
         {1:~                                                                }|*13
                                                                          |
@@ -815,7 +815,7 @@ describe('treesitter highlighting (C)', function()
 
     screen:expect({
       grid = [[
-          void foo(int {15:*}{25:bar});                                            |
+        void foo(int {15:*}{25:bar});                                              |
         ^                                                                 |
         {1:~                                                                }|*15
                                                                          |
@@ -883,8 +883,8 @@ describe('treesitter highlighting (lua)', function()
 
     screen:expect({
       grid = [[
-          {15:local} {25:ffi} {15:=} {16:require(}{26:'ffi'}{16:)}                                     |
-          {25:ffi}{16:.}{25:cdef}{16:(}{26:"}{16:int}{26: }{16:(}{15:*}{26:fun}{16:)(int,}{26: }{16:char}{26: }{15:*}{16:);}{26:"}{16:)}                           |
+        {15:local} {25:ffi} {15:=} {16:require(}{26:'ffi'}{16:)}                                       |
+        {25:ffi}{16:.}{25:cdef}{16:(}{26:"}{16:int}{26: }{16:(}{15:*}{26:fun}{16:)(int,}{26: }{16:char}{26: }{15:*}{16:);}{26:"}{16:)}                             |
         ^                                                                 |
         {1:~                                                                }|*14
                                                                          |
@@ -1185,7 +1185,7 @@ printf('Hello World!');
         {18:```}{15:c}                                    |
         {25:printf}{16:(}{26:'Hello World!'}{16:);}                 |
         {18:```}                                     |
-           ^                                     |
+        ^                                        |
                                                 |
       ]],
     })
@@ -1271,7 +1271,7 @@ printf('Hello World!');
       {8:120 }{25:printf}{16:(}{26:'Hello World!'}{16:);}             |
       {8:122 }                                    |
       {8:124 }{25:printf}{16:(}{26:'Hello World!'}{16:);}             |
-      {8:126 }   ^                                 |
+      {8:126 }^                                    |
                                               |
     ]])
   end)
diff --git a/test/functional/treesitter/node_spec.lua b/test/functional/treesitter/node_spec.lua
index 2a1fa497af..2f6f810ef2 100644
--- a/test/functional/treesitter/node_spec.lua
+++ b/test/functional/treesitter/node_spec.lua
@@ -82,7 +82,7 @@ describe('treesitter node API', function()
     ]])
 
     exec_lua(function()
-      local parser = vim.treesitter.get_parser(0, 'c')
+      local parser = assert(vim.treesitter.get_parser(0, 'c'))
       local tree = parser:parse()[1]
       _G.root = tree:root()
       vim.treesitter.language.inspect('c')
@@ -92,7 +92,7 @@ describe('treesitter node API', function()
       end
     end)
 
-    exec_lua 'node = root:descendant_for_range(0, 11, 0, 16)'
+    exec_lua 'node = root:descendant_for_range(0, 9, 0, 14)'
     eq('int x', lua_eval('node_text(node)'))
 
     exec_lua 'node = node:next_sibling()'
diff --git a/test/functional/treesitter/query_spec.lua b/test/functional/treesitter/query_spec.lua
index 6db0ffe5a0..be9c60b8ad 100644
--- a/test/functional/treesitter/query_spec.lua
+++ b/test/functional/treesitter/query_spec.lua
@@ -386,8 +386,8 @@ void ui_refresh(void)
       [[((primitive_type) @c-keyword (#any-of? @c-keyword "int" "float"))]]
     )
     eq({
-      { 'c-keyword', 'primitive_type', { 2, 2, 2, 5 }, 'int' },
-      { 'c-keyword', 'primitive_type', { 3, 4, 3, 7 }, 'int' },
+      { 'c-keyword', 'primitive_type', { 2, 0, 2, 3 }, 'int' },
+      { 'c-keyword', 'primitive_type', { 3, 2, 3, 5 }, 'int' },
     }, res0)
 
     local res1 = exec_lua(
@@ -401,9 +401,9 @@ void ui_refresh(void)
       ]]
     )
     eq({
-      { 'fizzbuzz-strings', 'string_literal', { 6, 15, 6, 38 }, '"number= %d FizzBuzz\\n"' },
-      { 'fizzbuzz-strings', 'string_literal', { 8, 15, 8, 34 }, '"number= %d Fizz\\n"' },
-      { 'fizzbuzz-strings', 'string_literal', { 10, 15, 10, 34 }, '"number= %d Buzz\\n"' },
+      { 'fizzbuzz-strings', 'string_literal', { 6, 13, 6, 36 }, '"number= %d FizzBuzz\\n"' },
+      { 'fizzbuzz-strings', 'string_literal', { 8, 13, 8, 32 }, '"number= %d Fizz\\n"' },
+      { 'fizzbuzz-strings', 'string_literal', { 10, 13, 10, 32 }, '"number= %d Buzz\\n"' },
     }, res1)
   end)
 
@@ -608,9 +608,9 @@ void ui_refresh(void)
 
     eq(
       {
-        { 0, 2, 0, 8 },
-        { 1, 2, 1, 8 },
-        { 2, 2, 2, 8 },
+        { 0, 0, 0, 6 },
+        { 1, 0, 1, 6 },
+        { 2, 0, 2, 6 },
       },
       test(
         [[
@@ -636,9 +636,9 @@ void ui_refresh(void)
 
     eq(
       {
-        { 0, 2, 0, 7 },
-        { 1, 2, 1, 8 },
-        { 2, 2, 2, 7 },
+        { 0, 0, 0, 5 },
+        { 1, 0, 1, 6 },
+        { 2, 0, 2, 5 },
       },
       test(
         [[
@@ -675,9 +675,9 @@ void ui_refresh(void)
     end)
 
     eq({
-      { 0, 2, 0, 12 },
-      { 1, 2, 1, 12 },
-      { 2, 2, 2, 12 },
+      { 0, 0, 0, 10 },
+      { 1, 0, 1, 10 },
+      { 2, 0, 2, 10 },
     }, result)
   end)