From 8d3bbdf2a27308f7f912428e99314ffcad041ced Mon Sep 17 00:00:00 2001
From: pit-ray <pit-ray@outlook.com>
Date: Fri, 10 Nov 2023 17:11:03 +0900
Subject: [PATCH 1/3] add placeholder

---
 src/bind/mode/command_mode.cpp | 8 ++++++++
 src/core/version.hpp           | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/bind/mode/command_mode.cpp b/src/bind/mode/command_mode.cpp
index b7e56aec..936d612e 100644
--- a/src/bind/mode/command_mode.cpp
+++ b/src/bind/mode/command_mode.cpp
@@ -183,6 +183,10 @@ namespace vind
                 return result ;
             }
 
+            void complement_command() {
+
+            }
+
             void write_as_printable(const core::CmdUnit::SPtr& input) {
                 // Aggregate the printable keys into this vector from input and outputs.
                 std::vector<core::CmdUnit::SPtr> printables ;
@@ -285,6 +289,10 @@ namespace vind
                         pimpl->forward_history() ;
                         continue ;
                     }
+                    if(input->is_containing(KEYCODE_TAB)) {
+                        pimpl->complement_command() ;
+                        continue ;
+                    }
                     if(input->is_containing(KEYCODE_ENTER)) {
                         result = pimpl->decide() ;
                         break_flag = true ;
diff --git a/src/core/version.hpp b/src/core/version.hpp
index 08dd0afc..0fd51126 100644
--- a/src/core/version.hpp
+++ b/src/core/version.hpp
@@ -1,6 +1,6 @@
 #ifndef _VERSION_HPP
 #define _VERSION_HPP
 
-#define WIN_VIND_VERSION "5.5.2.0"
+#define WIN_VIND_VERSION "5.6.0.0"
 
 #endif

From bdd3f588881b3eac1f18cfce9e1c0c3efdc2aa89 Mon Sep 17 00:00:00 2001
From: pit-ray <pit-ray@outlook.com>
Date: Fri, 5 Jan 2024 05:12:27 +0900
Subject: [PATCH 2/3] update documents

---
 docs/cheat_sheet/functions/index.md | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/docs/cheat_sheet/functions/index.md b/docs/cheat_sheet/functions/index.md
index 015ea6b7..40038647 100644
--- a/docs/cheat_sheet/functions/index.md
+++ b/docs/cheat_sheet/functions/index.md
@@ -9,7 +9,19 @@ disable_anchors: true
 ## Mode
 
 ### **`<to_command>`**
-Enter the command mode. Generally, this command is called with `:`. In the command mode, the typed characters are displayed on the virtual command line, the command can be executed with the `<enter>` key, and you can delete characters with `<bs>`. You can also use the `<up>` and `<down>` keys to move thr class="dash"ough the executed history.
+Enter the command mode, which is generally called with `:`.
+In the command mode, the typed characters are displayed on the virtual command line.
+You can operate the virtual command line as shown in the following table.
+
+|**Key**|**Operation**|
+|:---:|:---:|
+|`<enter>`|Execute the current command|
+|`<bs>`|Delete characters|
+|`<up>`|Backward history|
+|`<down>`|Forward history|
+|`<tab>`|Complete commands|
+
+<br>
 
 <p align="center">
   <img src="https://pit-ray.github.io/win-vind/imgs/cmdline_demo.gif" class="img-fluid"/>

From 2673c616ece62744b5c226d60a36481f8c68efc9 Mon Sep 17 00:00:00 2001
From: pit-ray <pit-ray@outlook.com>
Date: Fri, 5 Jan 2024 05:19:29 +0900
Subject: [PATCH 3/3] fix compile error

---
 src/bind/mode/command_mode.cpp | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/bind/mode/command_mode.cpp b/src/bind/mode/command_mode.cpp
index 8049ebd2..e485d834 100644
--- a/src/bind/mode/command_mode.cpp
+++ b/src/bind/mode/command_mode.cpp
@@ -209,7 +209,7 @@ namespace vind
                         }
                     }
 
-                    std::set<std::string> candidates_set ;
+                    std::set<std::string> candidate_set ;
                     auto matchers = solver->get_trigger_matchers() ;
                     for(auto matcher : matchers) {
                         if(!matcher->is_rejected()) {
@@ -243,10 +243,10 @@ namespace vind
                                 cmd_str += s ;
                             }
 
-                            if(candidate_set.find(cmd_str) != candidate_set.end()) {  // Avoid the duplicated candidates.
+                            if(candidate_set.find(cmd_str) == candidate_set.end()) {  // Avoid the duplicated candidates.
                                 candidates_.push_back(std::move(cmd_no_args)) ;
                                 print_candidates_.push_back(std::move(print_cmd_no_args)) ;
-                                candidates_str.push_back(std::move(cmd_str)) ;
+                                candidate_set.insert(std::move(cmd_str)) ;
                             }
                         }
                     }
@@ -254,7 +254,7 @@ namespace vind
                     // Show the candidates in the virtual command line.
                     if(!candidates_.empty()) {
                         std::stringstream ss ;
-                        for(const auto& s : candidates_str) {
+                        for(const auto& s : candidate_set) {
                             ss << ":" << s << " " ;
                         }
                         opt::VCmdLine::print(opt::StaticMessage(ss.str())) ;
@@ -393,7 +393,10 @@ namespace vind
                         break_flag = true ;
                         break ;
                     }
-                    pimpl->clear_candidates() ;
+
+                    if(!pimpl->candidates_.empty()) {
+                        pimpl->clear_candidates() ;
+                    }
                     pimpl->write_as_printable(input) ;
                 } while(!ihub.is_empty_queue()) ;