Plugin tutorial init:

Fix render issue, seems like compositor / set window size interaction gone wrong, it produced maybe framebuffer of wrong size not filling entire screen
Make disabling plugins easier
2026-07-04 11:45:17 +02:00 · 2026-07-04 10:27:53 +02:00 · 2026-07-04 08:51:41 +02:00 · 2026-07-03 22:10:53 +02:00 · 2026-07-03 21:37:20 +02:00 · 2026-07-03 21:32:40 +02:00
24 changed files with 518 additions and 31 deletions
--- a/build_web.sh
+++ b/build_web.sh
@@ -1,9 +1,46 @@
 #!/usr/bin/bash
+set -e

-incs="-Isrc/external/SDL/include -Isrc/external/lua/src -Isrc/external/glad -Lsrc/external/SDL/build_web -Isrc"
-wasmflags="-sALLOW_MEMORY_GROWTH=1 -sMAXIMUM_MEMORY=1gb -msimd128 -sTOTAL_STACK=5MB -sINITIAL_MEMORY=256mb -sUSE_WEBGL2 -sFULL_ES3=1 -sUSE_SDL=3 -sASYNCIFY -sASSERTIONS=2"
-flags="-Wall -Wno-missing-braces -Wno-writable-strings -nostdlib++ -fno-exceptions -fdiagnostics-absolute-paths"
-dbg="-g -DDEBUG_BUILD=1 -gsource-map"
-rel="-O3 -DDEBUG_BUILD=0"
+for arg in "$@"; do declare "$arg"='1'; done
+if [ ! -v release ]; then debug=1; fi
+if [ -v debug ];   then echo "[web debug build]"; fi
+if [ -v release ]; then echo "[web release build]"; fi

-emcc -o text_editor.html --shell-file=data/shell.html $flags $incs $wasmflags $dbg -lm -lSDL3 src/text_editor/text_editor.cpp
+# If emsdk is installed but not sourced in this shell, try the common location.
+if ! command -v emcc >/dev/null 2>&1; then
+    if [ -f "$HOME/emsdk/emsdk_env.sh" ]; then
+        # shellcheck disable=SC1091
+        source "$HOME/emsdk/emsdk_env.sh" >/dev/null
+    fi
+fi
+
+if ! command -v emcc >/dev/null 2>&1; then
+    echo "error: emcc not found. Source emsdk_env.sh or add emcc to PATH." >&2
+    exit 1
+fi
+
+mkdir -p build_web
+
+incs="-Isrc -Isrc/external/glad"
+flags="-Wall -Wextra -Werror -Wno-error=experimental -Wno-error=unused-parameter -Wformat=2 -Wundef -Wshadow -Wno-missing-field-initializers -Wno-missing-braces -Wno-writable-strings \
+    -fdiagnostics-absolute-paths \
+    -nostdlib++ -fno-exceptions"
+wasmflags="-sALLOW_MEMORY_GROWTH=0 -sTOTAL_STACK=5MB -sINITIAL_MEMORY=256MB \
+    -sUSE_SDL=3 -sUSE_WEBGL2=1 -sMIN_WEBGL_VERSION=2 -sMAX_WEBGL_VERSION=2 -sFULL_ES3=1 \
+    -sASYNCIFY=1 -sASSERTIONS=2 \
+    -sEXIT_RUNTIME=0 \
+    -msimd128"
+
+if [ -v debug ]; then
+    flags="$flags -g -gsource-map -DDEBUG_BUILD=1"
+else
+    flags="$flags -O3 -DDEBUG_BUILD=0"
+fi
+
+emcc -o build_web/text_editor.html \
+    --shell-file data/shell.html \
+    $flags $incs $wasmflags \
+    src/text_editor.cpp \
+    -lm
+
+echo "Wrote build_web/text_editor.html"
--- a/data/shell.html
+++ b/data/shell.html
@@ -0,0 +1,76 @@
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover, user-scalable=no">
+  <title>text_editor</title>
+  <style>
+    html, body {
+      margin: 0;
+      padding: 0;
+      width: 100%;
+      height: 100%;
+      overflow: hidden;
+      background: #000;
+    }
+    canvas {
+      display: block;
+      width: 100vw;
+      height: 100vh;
+      outline: none;
+      border: 0;
+      background: #000;
+    }
+  </style>
+</head>
+<body>
+  <canvas id="canvas" oncontextmenu="event.preventDefault()" tabindex="0"></canvas>
+  <div id="error-box" style="display:none; position:fixed; left:12px; right:12px; bottom:12px; z-index:9999; box-sizing:border-box; max-height:35vh; overflow:auto; padding:10px 12px; border:1px solid #7f1d1d; border-radius:6px; background:rgba(127,29,29,0.94); color:#fff; font:13px/1.35 monospace; white-space:pre-wrap;"></div>
+  <script>
+    const errorBox = document.getElementById('error-box');
+
+    function showError(message) {
+      const text = String(message || 'Unknown error');
+      console.error(text);
+      errorBox.style.display = 'block';
+      errorBox.textContent = text;
+    }
+
+    window.addEventListener('error', (event) => {
+      showError(event.error && event.error.stack ? event.error.stack : event.message);
+    });
+
+    window.addEventListener('unhandledrejection', (event) => {
+      const reason = event.reason;
+      showError(reason && reason.stack ? reason.stack : reason);
+      event.preventDefault();
+    });
+
+    var Module = {
+      canvas: document.getElementById('canvas'),
+      print: (text) => console.log(text),
+      printErr: (text) => showError(text),
+      onAbort: (what) => showError('Aborted: ' + what),
+      setStatus: (text) => { if (text) console.log(text); }
+    };
+
+    function resizeCanvasToDisplaySize() {
+      const canvas = Module.canvas;
+      const dpr = window.devicePixelRatio || 1;
+      const w = Math.max(1, Math.floor(window.innerWidth * dpr));
+      const h = Math.max(1, Math.floor(window.innerHeight * dpr));
+      if (canvas.width !== w || canvas.height !== h) {
+        canvas.width = w;
+        canvas.height = h;
+      }
+    }
+
+    window.addEventListener('resize', resizeCanvasToDisplaySize);
+    window.addEventListener('load', () => {
+      resizeCanvasToDisplaySize();
+      Module.canvas.focus();
+    });
+  </script>
+  {{{ SCRIPT }}}
+</body>
+</html>
--- a/src/basic_alloc.cpp
+++ b/src/basic_alloc.cpp
@@ -284,7 +284,7 @@ API void Init(BlockArena *arena) {
 }

 API void *PushSize(BlockArena *arena, size_t size) {
-    if (size > (size_t)(arena->end - arena->start)) {
+    if (!arena->blocks || size > (size_t)(arena->end - arena->start)) {
        AddBlock(arena, size);
    }
    U8 *result = arena->start;
@@ -323,7 +323,7 @@ API void *BlockArenaAllocatorProc(void *object, int kind, void *p, size_t size)
    BlockArena *arena = (BlockArena *)object;
    if (kind == AllocatorKind_Allocate) {
        return PushSize(arena, size);
-    } else if (AllocatorKind_Deallocate) {
+    } else if (kind == AllocatorKind_Deallocate) {
    } else {
        Assert(!"invalid codepath");
    }
@@ -331,7 +331,34 @@ API void *BlockArenaAllocatorProc(void *object, int kind, void *p, size_t size)
 }

 #if OS_WASM
+BlockArena ScratchArenas[4];
 API void InitScratch() {
+    for (int i = 0; i < 4; i += 1) {
+        if (!ScratchArenas[i].blocks) Init(&ScratchArenas[i]);
+    }
+}
+
+API BlockArena *GetScratchEx(BlockArena **conflicts, int conflict_count) {
+    BlockArena *unoccupied = 0;
+    for (int i = 0; i < Lengthof(ScratchArenas); i += 1) {
+        BlockArena *from_pool = &ScratchArenas[i];
+        unoccupied = from_pool;
+        for (int conflict_i = 0; conflict_i < conflict_count; conflict_i += 1) {
+            BlockArena *from_conflict = conflicts[conflict_i];
+            if (from_pool == from_conflict) {
+                unoccupied = 0;
+                break;
+            }
+        }
+
+        if (unoccupied) {
+            break;
+        }
+    }
+
+    // Failed to get free scratch memory, this is a fatal error, this shouldnt happen
+    Assert(unoccupied);
+    return unoccupied;
 }
 #else
 thread_local VirtualArena ScratchArenas[4];
@@ -439,4 +466,148 @@ void RunArenaTest() {
        Release(&arena);
        Assert(MemoryTrackingRecord.len == 0);
    }
+
+    // Unwind-to-null must leave the arena reusable. This catches crashes/UB in
+    // temp-memory style "clear and then allocate again" usage.
+    {
+        BlockArena arena = {};
+        arena.allocator = memory_tracking_allocator;
+        Unwind(&arena, 0);
+        U8 *a = (U8 *)PushSize(&arena, 64);
+        for (int i = 0; i < 64; i += 1) a[i] = (U8)i;
+        Unwind(&arena, 0);
+        Assert(MemoryTrackingRecord.len == 0);
+        U8 *b = (U8 *)PushSize(&arena, 128);
+        for (int i = 0; i < 128; i += 1) b[i] = (U8)(255 - i);
+        Release(&arena);
+        Assert(MemoryTrackingRecord.len == 0);
+    }
+
+    // Nested temp checkpoints, including a child allocation that forces a new
+    // block. Older allocations must survive, newer blocks must be released, and
+    // the checkpoint address must be reused by the next allocation.
+    {
+        BlockArena arena = {};
+        arena.allocator = memory_tracking_allocator;
+        U8 *permanent = (U8 *)PushSize(&arena, 256);
+        for (int i = 0; i < 256; i += 1) permanent[i] = (U8)i;
+
+        U8 *checkpoint_a = arena.start;
+        U8 *temp_a = (U8 *)PushSize(&arena, KiB(64));
+        for (size_t i = 0; i < KiB(64); i += 1) temp_a[i] = 0xA1;
+
+        U8 *checkpoint_b = arena.start;
+        U8 *temp_b = (U8 *)PushSize(&arena, MiB(2));
+        for (size_t i = 0; i < MiB(2); i += 4096) temp_b[i] = 0xB2;
+        Assert(MemoryTrackingRecord.len == 2);
+
+        Unwind(&arena, checkpoint_b);
+        Assert(arena.start == checkpoint_b);
+        Assert(MemoryTrackingRecord.len == 1);
+        for (int i = 0; i < 256; i += 1) Assert(permanent[i] == (U8)i);
+        for (size_t i = 0; i < KiB(64); i += 1) Assert(temp_a[i] == 0xA1);
+        Assert(PushSize(&arena, 32) == checkpoint_b);
+
+        Unwind(&arena, checkpoint_a);
+        Assert(arena.start == checkpoint_a);
+        for (int i = 0; i < 256; i += 1) Assert(permanent[i] == (U8)i);
+        Assert(PushSize(&arena, 32) == checkpoint_a);
+
+        Release(&arena);
+        Assert(MemoryTrackingRecord.len == 0);
+    }
+
+    // Repeatedly grow through multiple blocks, unwind back through all of them,
+    // allocate again, and do it many times. This is the pattern a temp arena can
+    // hit if one outer checkpoint is reused around variable-size work.
+    {
+        BlockArena arena = {};
+        arena.allocator = memory_tracking_allocator;
+        U8 *guard = (U8 *)PushSize(&arena, 1024);
+        for (int i = 0; i < 1024; i += 1) guard[i] = (U8)i;
+        U8 *base_checkpoint = arena.start;
+
+        for (int cycle = 0; cycle < 32; cycle += 1) {
+            U8 *first_block_temp = (U8 *)PushSize(&arena, KiB(900));
+            first_block_temp[0] = (U8)cycle;
+            first_block_temp[KiB(900) - 1] = (U8)(cycle + 1);
+            U8 *mid_checkpoint = arena.start;
+
+            U8 *large_temp = (U8 *)PushSize(&arena, MiB(2) + (size_t)cycle * 8);
+            large_temp[0] = (U8)(cycle + 2);
+            large_temp[MiB(2) - 1] = (U8)(cycle + 3);
+            U8 *last_temp = (U8 *)PushSize(&arena, KiB(700));
+            last_temp[0] = (U8)(cycle + 4);
+            last_temp[KiB(700) - 1] = (U8)(cycle + 5);
+            Assert(MemoryTrackingRecord.len == 3);
+
+            Unwind(&arena, mid_checkpoint);
+            Assert(arena.start == mid_checkpoint);
+            Assert(MemoryTrackingRecord.len == 1);
+            Assert(first_block_temp[0] == (U8)cycle);
+            Assert(first_block_temp[KiB(900) - 1] == (U8)(cycle + 1));
+            for (int i = 0; i < 1024; i += 1) Assert(guard[i] == (U8)i);
+            Assert(PushSize(&arena, 16) == mid_checkpoint);
+
+            Unwind(&arena, base_checkpoint);
+            Assert(arena.start == base_checkpoint);
+            Assert(MemoryTrackingRecord.len == 1);
+            for (int i = 0; i < 1024; i += 1) Assert(guard[i] == (U8)i);
+            Assert(PushSize(&arena, 16) == base_checkpoint);
+            Unwind(&arena, base_checkpoint);
+        }
+
+        Release(&arena);
+        Assert(MemoryTrackingRecord.len == 0);
+    }
+
+    // Checkpoint exactly at the end of a block is legal; unwinding to it should
+    // drop later blocks and leave the full block as the current block.
+    {
+        BlockArena arena = {};
+        arena.allocator = memory_tracking_allocator;
+        PushSize(&arena, 1);
+        size_t remaining = (size_t)(arena.end - arena.start);
+        PushSize(&arena, remaining);
+        U8 *checkpoint = arena.start;
+        Assert(checkpoint == arena.end);
+        PushSize(&arena, 1);
+        Assert(MemoryTrackingRecord.len == 2);
+        Unwind(&arena, checkpoint);
+        Assert(arena.blocks);
+        Assert(arena.blocks->next == NULL);
+        Assert(arena.start == checkpoint);
+        Assert(arena.end == checkpoint);
+        PushSize(&arena, 1);
+        Assert(MemoryTrackingRecord.len == 2);
+        Release(&arena);
+        Assert(MemoryTrackingRecord.len == 0);
+    }
+
+    // Deterministic stack-style stress test: allocate temps at many nested
+    // checkpoints, unwind in reverse order, and verify surviving bytes.
+    {
+        BlockArena arena = {};
+        arena.allocator = memory_tracking_allocator;
+        U8 *checkpoints[128];
+        U8 *ptrs[128];
+        size_t sizes[128];
+        for (int i = 0; i < 128; i += 1) {
+            checkpoints[i] = arena.start;
+            sizes[i] = (size_t)(((i * 7919) % (64 * 1024)) + 1);
+            ptrs[i] = (U8 *)PushSize(&arena, sizes[i]);
+            for (size_t j = 0; j < sizes[i]; j += 4096) ptrs[i][j] = (U8)i;
+            ptrs[i][sizes[i] - 1] = (U8)i;
+        }
+        for (int i = 127; i >= 0; i -= 1) {
+            Assert(ptrs[i][0] == (U8)i);
+            Assert(ptrs[i][sizes[i] - 1] == (U8)i);
+            Unwind(&arena, checkpoints[i]);
+            Assert(arena.start == checkpoints[i]);
+        }
+        Unwind(&arena, 0);
+        Assert(MemoryTrackingRecord.len == 0);
+        Release(&arena);
+        Assert(MemoryTrackingRecord.len == 0);
+    }
 }
--- a/src/basic_alloc.h
+++ b/src/basic_alloc.h
@@ -56,6 +56,7 @@ struct BlockArena {
    operator Allocator() { return {BlockArenaAllocatorProc, this}; }
 };

+API void  Init(BlockArena *arena);
 API void *PushSize(BlockArena *arena, size_t size);
 API void  Release(BlockArena *arena);
 API void  Unwind(BlockArena *arena, U8 *pos);
@@ -98,16 +99,43 @@ API void          Release(VirtualArena *arena);
 ///////////////////////////////
 // Scratch
 #if OS_WASM
+extern BlockArena ScratchArenas[4];
+API BlockArena *GetScratchEx(BlockArena **conflicts, int conflict_count);
 struct Scratch {
-    BlockArena arena = {};
-    Scratch() {}
-    Scratch(BlockArena *conflict) {}
-    Scratch(BlockArena *c1, BlockArena *c2) {}
-    Scratch(Allocator conflict) {}
-    Scratch(Allocator c1, Allocator c2) {}
-    ~Scratch() { Release(&arena); }
-    operator BlockArena *() { return &arena; }
-    operator Allocator() { return arena; }
+    BlockArena *arena;
+    U8 *p;
+    Scratch() {arena = &ScratchArenas[0]; if (!arena->blocks) Init(arena); p = arena->start; arena->refs += 1;}
+    Scratch(BlockArena *conflict) {
+        BlockArena *conf[] = {conflict};
+        arena = GetScratchEx(conf, Lengthof(conf));
+        if (!arena->blocks) Init(arena);
+        p = arena->start;
+        arena->refs += 1;
+    }
+    Scratch(BlockArena *c1, BlockArena *c2) {
+        BlockArena *conf[] = {c1, c2};
+        arena = GetScratchEx(conf, Lengthof(conf));
+        if (!arena->blocks) Init(arena);
+        p = arena->start;
+        arena->refs += 1;
+    }
+    Scratch(Allocator conflict) {
+        BlockArena *conf[] = {(BlockArena *)conflict.object};
+        arena = GetScratchEx(conf, Lengthof(conf));
+        if (!arena->blocks) Init(arena);
+        p = arena->start;
+        arena->refs += 1;
+    }
+    Scratch(Allocator c1, Allocator c2) {
+        BlockArena *conf[] = {(BlockArena *)c1.object, (BlockArena *)c2.object};
+        arena = GetScratchEx(conf, Lengthof(conf));
+        if (!arena->blocks) Init(arena);
+        p = arena->start;
+        arena->refs += 1;
+    }
+    ~Scratch() { Unwind(arena, p); arena->refs -= 1; }
+    operator BlockArena *() { return arena; }
+    operator Allocator() { return *arena; }
  private: // @Note: Disable copy constructors, cause its error prone
    Scratch(Scratch &arena);
    Scratch(Scratch &arena, Scratch &a2);
--- a/src/globals.cpp
+++ b/src/globals.cpp
@@ -172,7 +172,7 @@ RegisterVariable(Int, WaitForEvents, 1);
 RegisterVariable(Int, DrawLineNumbers, 1);
 RegisterVariable(Int, DrawScrollbar, 1);
 RegisterVariable(Int, IndentSize, 4);
-RegisterVariable(Int, FontSize, 15);
+RegisterVariable(Int, FontSize, 20);
 RegisterVariable(String, PathToFont, "");
 RegisterVariable(Float, UndoMergeTime, 0.3);
 RegisterVariable(Float, JumpHistoryMergeTime, 0.3);
--- a/src/plugin_basic_commands.cpp
+++ b/src/plugin_basic_commands.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_BASIC_COMMANDS
 void CMD_Redo() {
    BSet active = GetBSet(ActiveWindowID);
    RedoEdit(active.buffer, &active.view->carets);
@@ -270,4 +271,5 @@ void CMD_PlayMacro() {
    }

    For (MacroPlayback) Add(&EventPlayback, it);
-} RegisterCommand(CMD_PlayMacro, "alt-m", "Start playing back a macro recording");
+} RegisterCommand(CMD_PlayMacro, "alt-m", "Start playing back a macro recording");
+#endif
--- a/src/plugin_build_window.cpp
+++ b/src/plugin_build_window.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_BUILD_WINDOW
 WindowID BuildWindowID;
 ViewID BuildViewID;
 BufferID BuildBufferID;
@@ -90,3 +91,4 @@ void CMD_ShowBuildWindow() {
        main.window->visible = false;
    }
 } RegisterCommand(CMD_ShowBuildWindow, "ctrl-grave", "Toggles visibility of the build window");
+#endif
--- a/src/plugin_command_runner_window.cpp
+++ b/src/plugin_command_runner_window.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_COMMAND_RUNNER_WINDOW
 WindowID CommandRunnerWindowID;

 void CMD_ShowCommandRunner() {
@@ -65,3 +66,4 @@ void InitCommandRunnerWindow() {
    window->jump_history = false;
    AddCommand(&view->commands, "Open", OpenKeySet, CMD_OpenForRunnerWindow);
 }
+#endif // PLUGIN_COMMAND_RUNNER_WINDOW
--- a/src/plugin_command_window.cpp
+++ b/src/plugin_command_window.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_COMMAND_WINDOW
 WindowID CommandWindowID;

 void CMD_ShowCommands() {
@@ -84,3 +85,4 @@ void InitCommandWindow() {
    window->lose_focus_on_escape = true;
    window->jump_history = false;
 }
+#endif // PLUGIN_COMMAND_WINDOW
--- a/src/plugin_debug_window.cpp
+++ b/src/plugin_debug_window.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_DEBUG_WINDOW
 WindowID DebugWindowID;
 ViewID DebugViewID;
 BufferID DebugBufferID;
@@ -65,3 +66,4 @@ void CMD_ToggleDebug() {
    Window *window = GetWindow(DebugWindowID);
    window->visible = !window->visible;
 } RegisterCommand(CMD_ToggleDebug, "ctrl-0", "Open a floating window that might become useful for debugging");
+#endif // PLUGIN_DEBUG_WINDOW
--- a/src/plugin_directory_navigation.cpp
+++ b/src/plugin_directory_navigation.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_DIRECTORY_NAVIGATION
 // @todo: On save rename files, delete files it should apply the changes
 // Instead of toying with Reopen maybe it should actually detect changes in directory etc. on update

@@ -203,4 +204,5 @@ void DestroyDirectoryWatcher(DirectoryWatcher *w)
 }
 #endif

+#endif
 #endif
--- a/src/plugin_project_management.cpp
+++ b/src/plugin_project_management.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_PROJECT_MANAGEMENT
 void SetProjectFolder(String dir) {
    ProjectFolder = Intern(&GlobalInternTable, dir);
    Scratch scratch;
@@ -134,4 +135,5 @@ void CO_CreateProject(mco_coro *co) {
    }

    CO_OpenCode(co);
-} RegisterCoroutineCommand(CO_CreateProject, "", "Creates a project in current buffer directory with template files and all that, asks user for input etc.");
+} RegisterCoroutineCommand(CO_CreateProject, "", "Creates a project in current buffer directory with template files and all that, asks user for input etc.");
+#endif
--- a/src/plugin_project_management.h
+++ b/src/plugin_project_management.h
@@ -1 +1,3 @@
+#if PLUGIN_PROJECT_MANAGEMENT
 void SetProjectFolder(String name);
+#endif
--- a/src/plugin_record_events.cpp
+++ b/src/plugin_record_events.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_RECORD_EVENTS
 Buffer *EventBuffer;

 void Serialize(Buffer *buffer, String name, EventKind *kind) {
@@ -67,4 +68,5 @@ void Serialize(Buffer *buffer, Event *e) {

 void CMD_CopyEvents() {
    SaveStringInClipboard(GetString(EventBuffer));
-} RegisterCommand(CMD_CopyEvents, "ctrl-shift-alt-j", "Copy all the events from the EventBuffer");
+} RegisterCommand(CMD_CopyEvents, "ctrl-shift-alt-j", "Copy all the events from the EventBuffer");
+#endif
--- a/src/plugin_record_gc.cpp
+++ b/src/plugin_record_gc.cpp
@@ -1 +1,3 @@
-Buffer *GCInfoBuffer;
+#if PLUGIN_RECORD_GC
+Buffer *GCInfoBuffer;
+#endif
--- a/src/plugin_search_open_buffers.cpp
+++ b/src/plugin_search_open_buffers.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_SEARCH_OPEN_BUFFERS
 struct SearchOpenBuffersParams {
    String16 needle;
    BufferID buffer;
@@ -127,3 +128,4 @@ void CMD_SearchOpenBuffers() {
    }
    SelectRange(main.view, GetLineRangeWithoutNL(main.buffer, 0));
 } RegisterCommand(CMD_SearchOpenBuffers, "ctrl-shift-f", "Interactive search over the entire project in a new buffer view");
+#endif
--- a/src/plugin_search_window.cpp
+++ b/src/plugin_search_window.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_SEARCH_WINDOW
 Int SearchBufferChangeID;

 void CMD_Search() {
@@ -110,3 +111,4 @@ void UpdateSearchWindow() {
        }
    }
 }
+#endif
--- a/src/plugin_status_window.cpp
+++ b/src/plugin_status_window.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_STATUS_WINDOW
 WindowID StatusWindowID;

 void InitStatusWindow() {
@@ -97,3 +98,4 @@ void UpdateStatusWindow() {
    SelectRange(title.view, MakeRange(0));
    ResetHistory(title.buffer);
 }
+#endif
--- a/src/plugin_tests.cpp
+++ b/src/plugin_tests.cpp
@@ -1,6 +1,5 @@
 #if PLUGIN_TESTS

-
 void Wait(mco_coro *co) {
    {Event ev = {};ev.kind = EVENT_KIND_INVALID; Add(&EventPlayback, ev);}
    Event *event = NULL;
@@ -120,4 +119,4 @@ Memes and stuff)FOO";
 } RegisterCoroutineCommand(CO_RunTests, "", "Basic tests");


-#endif
+#endif // PLUGIN_TESTS
--- a/src/plugin_tutorial.cpp
+++ b/src/plugin_tutorial.cpp
@@ -0,0 +1,118 @@
+#if PLUGIN_TUTORIAL
+
+#define RegisterTutorialSection(NAME, DESC, STRING)\
+String NAME##_string = STRING;\
+void CMD_##NAME() {\
+    Buffer *buffer = CreateBuffer(SysAllocator, GetUniqueBufferName(ProjectFolder, #NAME), NAME##_string.len * 4 + 4096);\
+    buffer->temp = true;\
+    RawAppend(buffer, NAME##_string);\
+    buffer->dirty = false;\
+    Open(buffer->name);\
+} RegisterCommand(CMD_##NAME, "", DESC);
+
+RegisterTutorialSection(EnterTheTutorial, "The guide to sailing the text", R"==(
+
+                 Hello sailor!
+        --------------------------------
+
+        I see you have entered the unknown
+        text waters of the internet.
+
+        Before we set sail, right click:
+
+                     :CoolText
+
+        ...and watch the waters stir.
+
+)==");
+
+RegisterTutorialSection(CoolText, "Coolest text inside the coolest tutorial", R"==(
+
+             The text can lead you
+              into interesting places
+        --------------------------------
+
+        Do not be afraid. Try these too:
+
+             :MakeFontLarger
+             :MakeFontSmaller
+
+        Make the letters huge.
+        Then make them tiny again.
+            and then ...
+
+        --------------------------------
+
+         :GoToNextSectionOfTheTutorial!
+
+)==");
+
+RegisterTutorialSection(GoToNextSectionOfTheTutorial, "Yes!", R"==(
+   Special words listen to keys too:
+
+       Ctrl-+      Ctrl--
+
+   Even right click has a twin:
+
+       Ctrl-Q      F12
+
+   Put your caret here and try:
+
+       :Prev
+       :New (beware, you may never return! Hint: Take a look at the bar on the bottom)
+       :HowToFindCommands
+)==");
+
+RegisterTutorialSection(HowToFindCommands, "Tutorial on finding the commands", R"==(
+    Open the map:
+
+        :ShowCommands (Ctrl-Shift-P)
+
+    Type a few letters.
+    Press (Enter) to choose.
+
+    These special words are not magical
+        You can easily find them
+            and use.
+
+    -------------------------------
+
+        HowToBindCommandsToKeys
+
+    -------------------------------
+)==");
+
+RegisterTutorialSection(HowToBindCommandsToKeys, "how to bind commands to keys", R"==(
+
+We will start easy. Try selecting the entire line below and (ctrl-q / right click / F12)
+
+:Set DrawLineNumbers 0
+:Set TextColor ffaa0000
+
+
+
+Make it normal again:
+
+:Set DrawLineNumbers 1
+:Set TextColor ff21201d
+
+
+
+And of course this setup also works for keys:
+
+:Set MakeFontLarger 'ctrl-t'
+
+
+
+
+See the map for this:
+
+    :OpenConfigOptions
+
+)==");
+
+void InitTutorial() {
+    CMD_EnterTheTutorial();
+}
+
+#endif
--- a/src/plugin_window_management.cpp
+++ b/src/plugin_window_management.cpp
@@ -1,3 +1,4 @@
+#if PLUGIN_WINDOW_MANAGEMENT
 void CMD_JumpPrev() {
    BSet main = GetBSet(PrimaryWindowID);
    JumpToLastValidView(main.window);
@@ -80,3 +81,4 @@ void CMD_GotoPrevInList() {
    BSet main = GetBSet(PrimaryWindowID);
    GotoNextInList(main.window, -1);
 } RegisterCommand(CMD_GotoPrevInList, "alt-e | shift-f8", "For example: when jumping from build panel to build error, a jump point is setup, user can click this button to go over to the previous compiler error");
+#endif
--- a/src/stb_sprintf.h
+++ b/src/stb_sprintf.h
@@ -164,16 +164,34 @@ PERFORMANCE vs MSVC 2008 32-/64-bit (GCC is even slower than MSVC):
 #define STBSP__ASAN
 #endif

+#if defined(__clang__)
+ #if defined(__has_attribute)
+  #if __has_attribute(__no_sanitize__)
+   // stb_sprintf intentionally uses unaligned word loads/stores for speed.
+   // UBSan reports these on x86/x64 even though the hardware permits them.
+   #define STBSP__UBSAN __attribute__((__no_sanitize__("undefined")))
+  #endif
+ #endif
+#elif defined(__GNUC__) && (__GNUC__ >= 5)
+ #define STBSP__UBSAN __attribute__((__no_sanitize_undefined__))
+#endif
+
+#ifndef STBSP__UBSAN
+#define STBSP__UBSAN
+#endif
+
+#define STBSP__SANITIZE_OFF STBSP__ASAN STBSP__UBSAN
+
 #ifdef STB_SPRINTF_STATIC
 #define STBSP__PUBLICDEC static
-#define STBSP__PUBLICDEF static STBSP__ASAN
+#define STBSP__PUBLICDEF static STBSP__SANITIZE_OFF
 #else
 #ifdef __cplusplus
 #define STBSP__PUBLICDEC extern "C"
-#define STBSP__PUBLICDEF extern "C" STBSP__ASAN
+#define STBSP__PUBLICDEF extern "C" STBSP__SANITIZE_OFF
 #else
 #define STBSP__PUBLICDEC extern
-#define STBSP__PUBLICDEF STBSP__ASAN
+#define STBSP__PUBLICDEF STBSP__SANITIZE_OFF
 #endif
 #endif

--- a/src/text_editor.cpp
+++ b/src/text_editor.cpp
@@ -73,8 +73,7 @@
 #include "render_opengl.cpp"

 #define PLUGIN_CONFIG 1
-#define PLUGIN_SEARCH_WINDOW 1
-#define PLUGIN_PROJECT_MANAGEMENT 1
+#define PLUGIN_TUTORIAL 1
 #define PLUGIN_WINDOW_MANAGEMENT 1
 #define PLUGIN_DIRECTORY_NAVIGATION 1
 #define PLUGIN_SEARCH_OPEN_BUFFERS 1
@@ -88,7 +87,6 @@
 #define PLUGIN_DEBUG_WINDOW 1
 #define PLUGIN_RECORD_GC 1
 #define PLUGIN_RECORD_EVENTS 1
-#define PLUGIN_DIRECTORY_NAVIGATION 1
 #define PLUGIN_LOAD_VCVARS OS_WINDOWS
 #define PLUGIN_REMEDYBG OS_WINDOWS
 #define PLUGIN_FILE_COMMANDS 1
@@ -135,6 +133,7 @@
 #include "plugin_file_commands.cpp"
 #include "plugin_word_complete.cpp"
 #include "plugin_tests.cpp"
+#include "plugin_tutorial.cpp"

 #if OS_WASM
 EM_JS(void, JS_SetMouseCursor, (const char *cursor_str), {
@@ -987,6 +986,7 @@ int main(int argc, char **argv, char **envp)
    }
 #endif

+#if PLUGIN_TESTS
    if (1) {
        RunArenaTest();
        For (TestFunctions) {
@@ -996,6 +996,7 @@ int main(int argc, char **argv, char **envp)
        // ReportErrorf("Testing DONE\n");
        // return 0;
    }
+#endif

    if (!SDL_Init(SDL_INIT_VIDEO)) {
        ReportErrorf("Couldn't initialize SDL! %s", SDL_GetError());
@@ -1028,6 +1029,7 @@ int main(int argc, char **argv, char **envp)
    int hhalf = 1000;
    int xhalf = 100;
    int yhalf = 100;
+    Unused(xhalf); Unused(yhalf);
 #else
    SDL_DisplayID primary_display_id = SDL_GetPrimaryDisplay();
    const SDL_DisplayMode *display_mode = SDL_GetCurrentDisplayMode(primary_display_id);
@@ -1043,7 +1045,9 @@ int main(int argc, char **argv, char **envp)
        ReportErrorf("Couldn't create window! %s", SDL_GetError());
        return 1;
    }
+#if !OS_LINUX
    SDL_SetWindowPosition(SDLWindow, xhalf, yhalf);
+#endif

    SDL_WindowGLContext = SDL_GL_CreateContext(SDLWindow);
    SDL_GL_MakeCurrent(SDLWindow, SDL_WindowGLContext);
@@ -1065,10 +1069,12 @@ int main(int argc, char **argv, char **envp)
    SDL_StartTextInput(SDLWindow);
    SDL_SetEventEnabled(SDL_EVENT_DROP_FILE, true);
    SDL_GL_SetSwapInterval(1); // vsync
+
    {
        float scale = SDL_GetWindowDisplayScale(SDLWindow);
        if (scale != 1.0f) DPIScale = scale;
    }
+    SDL_SyncWindow(SDLWindow);

    // InitBuffers
    {
@@ -1137,6 +1143,12 @@ int main(int argc, char **argv, char **envp)
        Open(argv[i]);
    }

+#if PLUGIN_TUTORIAL
+    if (argc == 1) {
+        InitTutorial();
+    }
+#endif
+
 #if PLUGIN_LOAD_VCVARS
    LoadVCVars();
 #endif
--- a/src/view.cpp
+++ b/src/view.cpp
@@ -217,7 +217,7 @@ void IndentedNewLine(View *view) {
    For(view->carets) {
        Int front = GetFront(it);
        Int indent = GetLineIndent(buffer, PosToLine(buffer, front));
-        String string = Format(scratch, "\n%.*s", indent, "                                                          ");
+        String string = Format(scratch, "\n%.*s", (int)indent, "                                                          ");
        String16 string16 = ToString16(scratch, string);
        AddEdit(&edits, it.range, string16);
    }
Author	SHA1	Message	Date
KK	3e6d3cc839	Plugin tutorial init:	2026-07-04 11:45:17 +02:00
KK	1e70444992	Fix render issue, seems like compositor / set window size interaction gone wrong, it produced maybe framebuffer of wrong size not filling entire screen	2026-07-04 10:27:53 +02:00
KK	e40d8773c4	Make disabling plugins easier	2026-07-04 08:51:41 +02:00
KK	46d758c191	Make shell nicer	2026-07-03 22:10:53 +02:00
KK	b5c9e10477	Add shell	2026-07-03 21:37:20 +02:00
KK	8f4c7745f0	Building for web again	2026-07-03 21:32:40 +02:00
KK	b2c3cac73d	Block allocator scratch	2026-07-03 21:14:23 +02:00
KK	cda805574f	Hardening the BlockAllocator	2026-07-03 20:50:13 +02:00