From 8fedbbf07bdb972a82af2923cbe914439389c808 Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Tue, 29 May 2012 05:19:27 +0000
Subject: [PATCH] ShellManager::eval now takes an additional env_var map

---
 src/command_manager.cc |  2 +-
 src/main.cc            |  2 +-
 src/shell_manager.cc   | 17 ++++++++++++-----
 src/shell_manager.hh   |  4 +++-
 4 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/src/command_manager.cc b/src/command_manager.cc
index 800b3a04..d348d976 100644
--- a/src/command_manager.cc
+++ b/src/command_manager.cc
@@ -99,7 +99,7 @@ static void shell_eval(std::vector<String>& params,
                        const String& cmdline,
                        const Context& context)
 {
-        String output = ShellManager::instance().eval(cmdline, context);
+        String output = ShellManager::instance().eval(cmdline, context, {});
         TokenList tokens = split(output);
 
         for (auto it = tokens.begin(); it != tokens.end(); ++it)
diff --git a/src/main.cc b/src/main.cc
index 39f5a4ec..afde43be 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -215,7 +215,7 @@ void do_pipe(Editor& editor, int count)
         editor.buffer().begin_undo_group();
         for (auto& sel : const_cast<const Editor&>(editor).selections())
         {
-            String new_content = ShellManager::instance().eval(cmdline, main_context);
+            String new_content = ShellManager::instance().eval(cmdline, main_context, {});
             editor.buffer().modify(Modification::make_erase(sel.begin(), sel.end()));
             editor.buffer().modify(Modification::make_insert(sel.begin(), new_content));
         }
diff --git a/src/shell_manager.cc b/src/shell_manager.cc
index f750ab05..48688494 100644
--- a/src/shell_manager.cc
+++ b/src/shell_manager.cc
@@ -12,7 +12,8 @@ ShellManager::ShellManager()
 {
 }
 
-String ShellManager::eval(const String& cmdline, const Context& context)
+String ShellManager::eval(const String& cmdline, const Context& context,
+                          const EnvVarMap& env_vars)
 {
     int write_pipe[2];
     int read_pipe[2];
@@ -61,11 +62,17 @@ String ShellManager::eval(const String& cmdline, const Context& context)
                 assert(false);
             assert(name.length() > 0);
 
-            auto env_var = m_env_vars.find(name);
-            if (env_var != m_env_vars.end())
+            auto local_var = env_vars.find(name);
+            if (local_var != env_vars.end())
+                setenv(("kak_" + name).c_str(), local_var->second.c_str(), 1);
+            else
             {
-                String value = env_var->second(context);
-                setenv(("kak_" + name).c_str(), value.c_str(), 1);
+                auto env_var = m_env_vars.find(name);
+                if (env_var != m_env_vars.end())
+                {
+                    String value = env_var->second(context);
+                    setenv(("kak_" + name).c_str(), value.c_str(), 1);
+                }
             }
 
             ++it;
diff --git a/src/shell_manager.hh b/src/shell_manager.hh
index b67136aa..661e9a4f 100644
--- a/src/shell_manager.hh
+++ b/src/shell_manager.hh
@@ -11,13 +11,15 @@ namespace Kakoune
 
 class Context;
 typedef std::function<String (const Context&)> EnvVarRetriever;
+typedef std::unordered_map<String, String>     EnvVarMap;
 
 class ShellManager : public Singleton<ShellManager>
 {
 public:
     ShellManager();
 
-    String eval(const String& cmdline, const Context& context);
+    String eval(const String& cmdline, const Context& context,
+                const EnvVarMap& env_vars);
 
     void register_env_var(const String& name, EnvVarRetriever retriever);