From e8ab2ab28a1481cc10b06e9a9add302b1ef0dbf7 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Thu, 21 Jul 2022 09:23:58 -0700
Subject: [PATCH 1/2] Expand tabs [ci skip]

[Misc #18891]
---
 ext/io/wait/wait.c | 46 +++++++++++++++++++++++-----------------------
 1 file changed, 23 insertions(+), 23 deletions(-)

diff --git a/ext/io/wait/wait.c b/ext/io/wait/wait.c
index 30637da..d74afb5 100644
--- a/ext/io/wait/wait.c
+++ b/ext/io/wait/wait.c
@@ -47,11 +47,11 @@ get_timeout(int argc, VALUE *argv, struct timeval *timerec)
     VALUE timeout = Qnil;
     rb_check_arity(argc, 0, 1);
     if (!argc || NIL_P(timeout = argv[0])) {
-	return NULL;
+        return NULL;
     }
     else {
-	*timerec = rb_time_interval(timeout);
-	return timerec;
+        *timerec = rb_time_interval(timeout);
+        return timerec;
     }
 }
 
@@ -60,7 +60,7 @@ wait_for_single_fd(rb_io_t *fptr, int events, struct timeval *tv)
 {
     int i = rb_wait_for_single_fd(fptr->fd, events, tv);
     if (i < 0)
-	rb_sys_fail(0);
+        rb_sys_fail(0);
     rb_io_check_closed(fptr);
     return (i & events);
 }
@@ -180,7 +180,7 @@ io_wait_readable(int argc, VALUE *argv, VALUE io)
 
 #ifndef HAVE_RB_IO_WAIT
     if (wait_for_single_fd(fptr, RB_WAITFD_IN, tv)) {
-	return io;
+        return io;
     }
     return Qnil;
 #else
@@ -216,7 +216,7 @@ io_wait_writable(int argc, VALUE *argv, VALUE io)
 #ifndef HAVE_RB_IO_WAIT
     tv = get_timeout(argc, argv, &timerec);
     if (wait_for_single_fd(fptr, RB_WAITFD_OUT, tv)) {
-	return io;
+        return io;
     }
     return Qnil;
 #else
@@ -260,31 +260,31 @@ static int
 wait_mode_sym(VALUE mode)
 {
     if (mode == ID2SYM(rb_intern("r"))) {
-	return RB_WAITFD_IN;
+        return RB_WAITFD_IN;
     }
     if (mode == ID2SYM(rb_intern("read"))) {
-	return RB_WAITFD_IN;
+        return RB_WAITFD_IN;
     }
     if (mode == ID2SYM(rb_intern("readable"))) {
-	return RB_WAITFD_IN;
+        return RB_WAITFD_IN;
     }
     if (mode == ID2SYM(rb_intern("w"))) {
-	return RB_WAITFD_OUT;
+        return RB_WAITFD_OUT;
     }
     if (mode == ID2SYM(rb_intern("write"))) {
-	return RB_WAITFD_OUT;
+        return RB_WAITFD_OUT;
     }
     if (mode == ID2SYM(rb_intern("writable"))) {
-	return RB_WAITFD_OUT;
+        return RB_WAITFD_OUT;
     }
     if (mode == ID2SYM(rb_intern("rw"))) {
-	return RB_WAITFD_IN|RB_WAITFD_OUT;
+        return RB_WAITFD_IN|RB_WAITFD_OUT;
     }
     if (mode == ID2SYM(rb_intern("read_write"))) {
-	return RB_WAITFD_IN|RB_WAITFD_OUT;
+        return RB_WAITFD_IN|RB_WAITFD_OUT;
     }
     if (mode == ID2SYM(rb_intern("readable_writable"))) {
-	return RB_WAITFD_IN|RB_WAITFD_OUT;
+        return RB_WAITFD_IN|RB_WAITFD_OUT;
     }
     rb_raise(rb_eArgError, "unsupported mode: %"PRIsVALUE, mode);
     return 0;
@@ -333,20 +333,20 @@ io_wait(int argc, VALUE *argv, VALUE io)
 
     GetOpenFile(io, fptr);
     for (i = 0; i < argc; ++i) {
-	if (SYMBOL_P(argv[i])) {
-	    event |= wait_mode_sym(argv[i]);
-	}
-	else {
-	    *(tv = &timerec) = rb_time_interval(argv[i]);
-	}
+        if (SYMBOL_P(argv[i])) {
+            event |= wait_mode_sym(argv[i]);
+        }
+        else {
+            *(tv = &timerec) = rb_time_interval(argv[i]);
+        }
     }
     /* rb_time_interval() and might_mode() might convert the argument */
     rb_io_check_closed(fptr);
     if (!event) event = RB_WAITFD_IN;
     if ((event & RB_WAITFD_IN) && rb_io_read_pending(fptr))
-	return Qtrue;
+        return Qtrue;
     if (wait_for_single_fd(fptr, event, tv))
-	return io;
+        return io;
     return Qnil;
 #else
     VALUE timeout = Qundef;

From 76d12a88cc9d1de9fadd22dd42e9f880c38204b4 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Date: Mon, 25 Jul 2022 12:10:47 +0900
Subject: [PATCH 2/2] Added .git-blame-ignore-revs for expand tabs

---
 .git-blame-ignore-revs | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 .git-blame-ignore-revs

diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644
index 0000000..c9c4381
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,7 @@
+# This is a file used by GitHub to ignore the following commits on `git blame`.
+#
+# You can also do the same thing in your local repository with:
+# $ git config --local blame.ignoreRevsFile .git-blame-ignore-revs
+
+# Expand tabs
+e8ab2ab28a1481cc10b06e9a9add302b1ef0dbf7