From 495bce32e957dcf45d6d6acf183599e18c92b09d Mon Sep 17 00:00:00 2001
From: Riley Martine <riley.martine@protonmail.com>
Date: Sat, 13 Apr 2019 20:21:59 +0800
Subject: [PATCH] Add support for latexindent (#2387)

---
 autoload/ale/fix/registry.vim                 |  5 +++
 autoload/ale/fixers/latexindent.vim           | 18 +++++++++
 doc/ale-tex.txt                               | 21 ++++++++++
 doc/ale.txt                                   |  1 +
 .../test_latexindent_fixer_callback.vader     | 40 +++++++++++++++++++
 test/tex_files/testfile.tex                   |  0
 6 files changed, 85 insertions(+)
 create mode 100644 autoload/ale/fixers/latexindent.vim
 create mode 100644 test/fixers/test_latexindent_fixer_callback.vader
 create mode 100644 test/tex_files/testfile.tex

diff --git a/autoload/ale/fix/registry.vim b/autoload/ale/fix/registry.vim
index 23d32f03..2b43e40a 100644
--- a/autoload/ale/fix/registry.vim
+++ b/autoload/ale/fix/registry.vim
@@ -285,6 +285,11 @@ let s:default_registry = {
 \       'suggested_filetypes': ['kt'],
 \       'description': 'Fix Kotlin files with ktlint.',
 \   },
+\   'latexindent': {
+\       'function': 'ale#fixers#latexindent#Fix',
+\       'suggested_filetypes': ['tex'],
+\       'description' : 'Indent code within environments, commands, after headings and within special code blocks.',
+\   },
 \}
 
 " Reset the function registry to the default entries.
diff --git a/autoload/ale/fixers/latexindent.vim b/autoload/ale/fixers/latexindent.vim
new file mode 100644
index 00000000..b0a0884a
--- /dev/null
+++ b/autoload/ale/fixers/latexindent.vim
@@ -0,0 +1,18 @@
+" Author: riley-martine <riley.martine@protonmail.com>
+" Description: Integration of latexindent with ALE.
+
+call ale#Set('tex_latexindent_executable', 'latexindent')
+call ale#Set('tex_latexindent_options', '')
+
+function! ale#fixers#latexindent#Fix(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'tex_latexindent_executable')
+    let l:options = ale#Var(a:buffer, 'tex_latexindent_options')
+
+    return {
+    \   'command': ale#Escape(l:executable)
+    \       . ' -l -w'
+    \       . (empty(l:options) ? '' : ' ' . l:options)
+    \       . ' %t',
+    \   'read_temporary_file': 1,
+    \}
+endfunction
diff --git a/doc/ale-tex.txt b/doc/ale-tex.txt
index 24aa3112..b1b09117 100644
--- a/doc/ale-tex.txt
+++ b/doc/ale-tex.txt
@@ -32,5 +32,26 @@ g:ale_lacheck_executable                             *g:ale_lacheck_executable*
   This variable can be changed to change the path to lacheck.
 
 
+
+===============================================================================
+latexindent                                                *ale-tex-latexindent*
+
+g:ale_tex_latexindent_executable              *g:ale_tex_latexindent_executable*
+                                              *b:ale_tex_latexindent_executable*
+  Type: |String|
+  Default: `'latexindent'`
+
+  This variable can be changed to change the path to latexindent.
+
+
+g:ale_tex_latexindent_options                   *g:ale_tex_latexindent_options*
+                                                *b:ale_tex_latexindent_options*
+  Type: |String|
+  Default: `''`
+
+  This variable can be changed to modify flags given to latexindent.
+
+
+
 ===============================================================================
   vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl:
diff --git a/doc/ale.txt b/doc/ale.txt
index 96c3a102..9971d355 100644
--- a/doc/ale.txt
+++ b/doc/ale.txt
@@ -2169,6 +2169,7 @@ documented in additional help files.
   tex.....................................|ale-tex-options|
     chktex................................|ale-tex-chktex|
     lacheck...............................|ale-tex-lacheck|
+    latexindent...........................|ale-tex-latexindent|
   texinfo.................................|ale-texinfo-options|
     write-good............................|ale-texinfo-write-good|
   text....................................|ale-text-options|
diff --git a/test/fixers/test_latexindent_fixer_callback.vader b/test/fixers/test_latexindent_fixer_callback.vader
new file mode 100644
index 00000000..d0da94a1
--- /dev/null
+++ b/test/fixers/test_latexindent_fixer_callback.vader
@@ -0,0 +1,40 @@
+Before:
+  Save g:ale_tex_latexindent_executable
+  Save g:ale_tex_latexindent_options
+
+  " Use an invalid global executable, so we don't match it.
+  let g:ale_tex_latexindent_executable = 'xxxinvalid'
+  let g:ale_tex_latexindent_options = ''
+
+  call ale#test#SetDirectory('/testplugin/test/fixers')
+
+After:
+  Restore
+
+  call ale#test#RestoreDirectory()
+
+Execute(The latexindent callback should return the correct default values):
+  call ale#test#SetFilename('../tex_files/testfile.tex')
+
+  AssertEqual
+  \ {
+  \   'read_temporary_file': 1,
+  \   'command': ale#Escape('xxxinvalid')
+  \     . ' -l -w'
+  \     . ' %t',
+  \ },
+  \ ale#fixers#latexindent#Fix(bufnr(''))
+
+Execute(The latexindent callback should include custom gofmt options):
+  let g:ale_tex_latexindent_options = "-l '~/.indentconfig.yaml'"
+  call ale#test#SetFilename('../tex_files/testfile.tex')
+
+  AssertEqual
+  \ {
+  \   'read_temporary_file': 1,
+  \   'command': ale#Escape('xxxinvalid')
+  \     . ' -l -w'
+  \     . ' ' . g:ale_tex_latexindent_options
+  \     . ' %t',
+  \ },
+  \ ale#fixers#latexindent#Fix(bufnr(''))
diff --git a/test/tex_files/testfile.tex b/test/tex_files/testfile.tex
new file mode 100644
index 00000000..e69de29b