More customizable options for the code completion. See the README.

This makes grep work on Ubuntu with gzip man pages.

README

@@ -1,4 +1,4 @@
-== Vim Erlang plugin ==
+=== Vim Erlang plugin ===
 
 The indentation plugin is provided by Csaba Hoch and disttributed with his
 permission.
@@ -18,7 +18,9 @@ The tarball root is vim_erlang-REL/. To remove this part of the package
 	- For local installation (one user only) extract the tarball to your
 	  directory
 
-Settings:
+
+== Settings ==
+
 You can set various variables in your vimrc file to make the plugin behave
 differently.
 
@@ -43,3 +45,23 @@ The options expect a string with the path or an integer value like before.
 	g:erlangManPath
 * Enable/disable using Erlang man pages in the code completion: (default: 1)
 	g:erlangCompletionDisplayDoc
+
+More completion options:
+The options expect a string as below is explained.
+
+* Set the `grep' command to be use when scanning the man pages: (default: "grep")
+	g:erlangCompletionGrep
+* Set the suffix of the man page names: (default: "")
+	g:erlangManSuffix
+
+	- On Ubuntu, Erlang man pages are placed like this:
+		/ERLANG/PATH/man/man3/lists.3erl.gz
+
+		** So, you must set:
+			let g:erlangCompletionGrep='zgrep'
+			let g:erlangManSuffix='erl\.gz'
+
+	- In another systems, Erlang man pages are placed like this:
+		/ERLANG/PATH/man/man3/lists.3
+
+		** In this case, use the default options value **

autoload/erlangcomplete.vim

@@ -9,7 +9,15 @@
 let s:erlangLocalFuncBeg    = '\(\<[0-9A-Za-z_-]*\|\s*\)$'
 let s:erlangExternalFuncBeg = '\<[0-9A-Za-z_-]\+:[0-9A-Za-z_-]*$'
 let s:ErlangBlankLine       = '^\s*\(%.*\)\?$'
-let s:erlangCompletionPath = '~/.vim/autoload/erlang_completion.erl'
+let s:erlangCompletionPath  = '~/.vim/autoload/erlang_completion.erl'
+
+if !exists('g:erlangCompletionGrep')
+	g:erlangCompletionGrep = 'grep'
+endif
+
+if !exists('g:erlangManSuffix')
+	g:erlangManSuffix = ''
+endif
 
 if !exists('g:erlangManPath')
 	let g:erlangManPath = '/usr/lib/erlang/man'
@@ -101,14 +109,14 @@ function s:erlangFindExternalFunc(module, base)
                 let function_name = matchstr(element, a:base . '\w\+')
                 let number_of_args = matchstr(element, '\d\+', len(function_name))
                 let number_of_comma = max([number_of_args - 1, 0])
-                let file_path = g:erlangManPath . '/man?/' . a:module . '\.?'
+                let file_path = g:erlangManPath . '/man?/' . a:module . '\.?' . g:erlangManSuffix
                 " [:-2] cutting some weird characters at the end
                 " becouse grep doesn't support multilines, we have to filter
                 " first by .B and next by looking via function name
                 " if someone have better idea, please change it
                 let description = ''
                 if g:erlangCompletionDisplayDoc != 0
-                    let system_command = 'grep -A 1 "\.B" ' . file_path . ' | grep -EZo "\<' . function_name . '\>\((\w+, ){' . number_of_comma . '}[^),]*\) -> .*"'
+                    let system_command = g:erlangCompletionGrep . ' -A 1 "\.B" ' . file_path . ' | grep -EZo "\<' . function_name . '\>\((\w+, ){' . number_of_comma . '}[^),]*\) -> .*"'
                     let description = system(system_command)
                     let description = description[:-2]
                 endif