refactor: replace manual header guards with #pragma once

It is less error-prone than manually defining header guards. Pretty much
all compilers support it even if it's not part of the C standard.

11 files changed, 11 insertions, 35 deletions

diff --git a/src/nvim/event/defs.h b/src/nvim/event/defs.h
index cf079681d0..571f61dfdb 100644
--- a/src/nvim/event/defs.h
+++ b/src/nvim/event/defs.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_DEFS_H
-#define NVIM_EVENT_DEFS_H
+#pragma once
 
 #include <assert.h>
 #include <stdarg.h>
@@ -34,5 +33,3 @@ static inline Event event_create(argv_callback cb, int argc, ...)
   VA_EVENT_INIT(&event, cb, argc);
   return event;
 }
-
-#endif  // NVIM_EVENT_DEFS_H
diff --git a/src/nvim/event/libuv_process.h b/src/nvim/event/libuv_process.h
index 4472839944..e3e2bfeb76 100644
--- a/src/nvim/event/libuv_process.h
+++ b/src/nvim/event/libuv_process.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_LIBUV_PROCESS_H
-#define NVIM_EVENT_LIBUV_PROCESS_H
+#pragma once
 
 #include <uv.h>
 
@@ -24,4 +23,3 @@ static inline LibuvProcess libuv_process_init(Loop *loop, void *data)
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/libuv_process.h.generated.h"
 #endif
-#endif  // NVIM_EVENT_LIBUV_PROCESS_H
diff --git a/src/nvim/event/loop.h b/src/nvim/event/loop.h
index 7b4b724359..58216f7ec3 100644
--- a/src/nvim/event/loop.h
+++ b/src/nvim/event/loop.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_LOOP_H
-#define NVIM_EVENT_LOOP_H
+#pragma once
 
 #include <stdint.h>
 #include <uv.h>
@@ -85,5 +84,3 @@ typedef struct loop {
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/loop.h.generated.h"
 #endif
-
-#endif  // NVIM_EVENT_LOOP_H
diff --git a/src/nvim/event/multiqueue.h b/src/nvim/event/multiqueue.h
index 2c5ba9d436..e01ee1e710 100644
--- a/src/nvim/event/multiqueue.h
+++ b/src/nvim/event/multiqueue.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_MULTIQUEUE_H
-#define NVIM_EVENT_MULTIQUEUE_H
+#pragma once
 
 #include <uv.h>
 
@@ -15,4 +14,3 @@ typedef void (*PutCallback)(MultiQueue *multiq, void *data);
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/multiqueue.h.generated.h"
 #endif
-#endif  // NVIM_EVENT_MULTIQUEUE_H
diff --git a/src/nvim/event/process.h b/src/nvim/event/process.h
index 69fe229b0e..234fc815af 100644
--- a/src/nvim/event/process.h
+++ b/src/nvim/event/process.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_PROCESS_H
-#define NVIM_EVENT_PROCESS_H
+#pragma once
 
 #include <stdbool.h>
 #include <stddef.h>
@@ -83,4 +82,3 @@ static inline bool process_is_stopped(Process *proc)
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/process.h.generated.h"
 #endif
-#endif  // NVIM_EVENT_PROCESS_H
diff --git a/src/nvim/event/rstream.h b/src/nvim/event/rstream.h
index 23ed00bfea..b2a62acf83 100644
--- a/src/nvim/event/rstream.h
+++ b/src/nvim/event/rstream.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_RSTREAM_H
-#define NVIM_EVENT_RSTREAM_H
+#pragma once
 
 #include <stdbool.h>
 #include <stddef.h>
@@ -11,4 +10,3 @@
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/rstream.h.generated.h"
 #endif
-#endif  // NVIM_EVENT_RSTREAM_H
diff --git a/src/nvim/event/signal.h b/src/nvim/event/signal.h
index f9adf62c20..946de1b4f0 100644
--- a/src/nvim/event/signal.h
+++ b/src/nvim/event/signal.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_SIGNAL_H
-#define NVIM_EVENT_SIGNAL_H
+#pragma once
 
 #include <uv.h>
 
@@ -23,4 +22,3 @@ struct signal_watcher {
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/signal.h.generated.h"
 #endif
-#endif  // NVIM_EVENT_SIGNAL_H
diff --git a/src/nvim/event/socket.h b/src/nvim/event/socket.h
index c6fcdec4bb..504af3c7a8 100644
--- a/src/nvim/event/socket.h
+++ b/src/nvim/event/socket.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_SOCKET_H
-#define NVIM_EVENT_SOCKET_H
+#pragma once
 
 #include <uv.h>
 
@@ -39,4 +38,3 @@ struct socket_watcher {
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/socket.h.generated.h"
 #endif
-#endif  // NVIM_EVENT_SOCKET_H
diff --git a/src/nvim/event/stream.h b/src/nvim/event/stream.h
index 33d2d6e775..d02707dc45 100644
--- a/src/nvim/event/stream.h
+++ b/src/nvim/event/stream.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_STREAM_H
-#define NVIM_EVENT_STREAM_H
+#pragma once
 
 #include <stdbool.h>
 #include <stddef.h>
@@ -61,4 +60,3 @@ struct stream {
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/stream.h.generated.h"
 #endif
-#endif  // NVIM_EVENT_STREAM_H
diff --git a/src/nvim/event/time.h b/src/nvim/event/time.h
index e84488fdd6..3514566901 100644
--- a/src/nvim/event/time.h
+++ b/src/nvim/event/time.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_TIME_H
-#define NVIM_EVENT_TIME_H
+#pragma once
 
 #include <stdbool.h>
 #include <uv.h>
@@ -23,4 +22,3 @@ struct time_watcher {
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/time.h.generated.h"
 #endif
-#endif  // NVIM_EVENT_TIME_H
diff --git a/src/nvim/event/wstream.h b/src/nvim/event/wstream.h
index ef1311c619..4cba7bde8f 100644
--- a/src/nvim/event/wstream.h
+++ b/src/nvim/event/wstream.h
@@ -1,5 +1,4 @@
-#ifndef NVIM_EVENT_WSTREAM_H
-#define NVIM_EVENT_WSTREAM_H
+#pragma once
 
 #include <stdbool.h>
 #include <stddef.h>
@@ -23,4 +22,3 @@ struct wbuffer {
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "event/wstream.h.generated.h"
 #endif
-#endif  // NVIM_EVENT_WSTREAM_H