Enhanced function for line joining

autoload/common/common.vim

@@ -18,9 +18,16 @@ function! common#common#GetVisualSelection() abort
 endfunction
 
 function! common#common#JoinLinesInText(text)
-    let text = substitute(a:text, "  ", " ", "g")
-    let text = substitute(text, "\n", " ", "g")
-    let text = substitute(text, "  ", "\\n", "g")
+    let text = substitute(a:text, '\t', ' ', 'g')
+    let lines = split(text, '\n')
+    let final_lines = []
+    for line in lines
+        let line = substitute(line, '\v^[ ]*', '', 'g') " Remove spaces in the beginning of the line
+        let line = substitute(line, '\v[ ]{2,}', ' ', 'g') " Remove more than one space in one place
+        call add(final_lines, line)
+    endfor
+    let text = join(final_lines, ' ')
+    let text = substitute(text, '  ', '\n', 'g')
     return text
 endfunction
 

doc/trans.txt

@@ -10,7 +10,7 @@
 Author:         Egor Churaev <[email protected]>
 Licence:        GPLv3
 Homepage:       https://github.com/echuraev/translate-shell.vim
-Version:        2.0
+Version:        2.0.1
 
 ==============================================================================
 CONTENTS                               *trans* *translate-shell.vim* *trans-context*
@@ -561,6 +561,10 @@ Example:
 ==============================================================================
 CHANGELOG                                                      *trans-changelog*
 
+2.0.1 (2018-11-09)
+      - Added search of translate direction in passed args
+      - Enhanced function for line joining
+
 2.0   (2018-11-03)
       - Unified :Trans and :TransVisual functions
 

test/check-common-functions.vader

@@ -17,6 +17,27 @@ Expect text:
   Hello!
   I would like to see how lines will joined!!!
 
+Execute (common#common#JoinLinesInText: Check join lines with spaces in the beginning):
+  let text = "Header!\n\nList to join:\n    * item1\n    * Long item 2\n    * Multiline item\n      with text\n\t* Mutliple item\n\t\ttext with tab"
+  silent! put = text
+  silent! put = ''
+  silent! put = common#common#JoinLinesInText(text)
+
+Expect text:
+
+  Header!
+
+  List to join:
+      * item1
+      * Long item 2
+      * Multiline item
+        with text
+  	* Mutliple item
+  		text with tab
+
+  Header!
+  List to join: * item1 * Long item 2 * Multiline item with text * Mutliple item text with tab
+
 Execute (common#common#GenerateInputlist: Check generation of inputlist):
   let text = "Select item:"
   let list = ['item 1', 'item 2', 'item 3']