fix typos. Patch by k_takata.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40825 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

26 files changed, 63 insertions, 63 deletions

diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index f08dce40a4..d6046f3744 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -2553,7 +2553,7 @@ BigDecimal_sign(VALUE self)
 /*
  * call-seq: BigDecimal.save_exception_mode { ... }
  *
- * Excecute the provided block, but preserve the exception mode
+ * Execute the provided block, but preserve the exception mode
  *
  *     BigDecimal.save_exception_mode do
  *       BigDecimal.mode(BigDecimal::EXCEPTION_OVERFLOW, false)
@@ -2582,7 +2582,7 @@ BigDecimal_save_exception_mode(VALUE self)
 /*
  * call-seq: BigDecimal.save_rounding_mode { ... }
  *
- * Excecute the provided block, but preserve the rounding mode
+ * Execute the provided block, but preserve the rounding mode
  *
  *     BigDecimal.save_exception_mode do
  *       BigDecimal.mode(BigDecimal::ROUND_MODE, :up)
@@ -2607,7 +2607,7 @@ BigDecimal_save_rounding_mode(VALUE self)
 /*
  * call-seq: BigDecimal.save_limit { ... }
  *
- * Excecute the provided block, but preserve the precision limit
+ * Execute the provided block, but preserve the precision limit
  *
  *      BigDecimal.limit(100)
  *      puts BigDecimal.limit
@@ -3266,7 +3266,7 @@ static int gfCheckVal = 1;      /* Value checking flag in VpNmlz()  */
 
 static Real *VpConstOne;    /* constant 1.0 */
 static Real *VpPt5;        /* constant 0.5 */
-#define maxnr 100UL    /* Maximum iterations for calcurating sqrt. */
+#define maxnr 100UL    /* Maximum iterations for calculating sqrt. */
                 /* used in VpSqrt() */
 
 /* ETC */
@@ -3690,7 +3690,7 @@ VpNumOfChars(Real *vp,const char *pszFmt)
  * [Input]
  *   BaseVal: Base value(assigned to BASE) for Vp calculation.
  *   It must be the form BaseVal=10**n.(n=1,2,3,...)
- *   If Base <= 0L,then the BASE will be calcurated so
+ *   If Base <= 0L,then the BASE will be calculated so
  *   that BASE is as large as possible satisfying the
  *   relation MaxVal <= BASE*(BASE+1). Where the value
  *   MaxVal is the largest value which can be represented
@@ -4415,7 +4415,7 @@ VpSetPTR(Real *a, Real *b, Real *c, size_t *a_pos, size_t *b_pos, size_t *c_pos,
 }
 
 /*
- * Return number og significant digits
+ * Return number of significant digits
  *       c = a * b , Where a = a0a1a2 ... an
  *             b = b0b1b2 ... bm
  *             c = c0c1c2 ... cl
@@ -4651,7 +4651,7 @@ VpDivd(Real *c, Real *r, Real *a, Real *b)
 	    }
 	    /* The first few word digits of r and b is the same and */
 	    /* the first different word digit of w is greater than that */
-	    /* of b, so quotinet is 1 and just subtract b from r. */
+	    /* of b, so quotient is 1 and just subtract b from r. */
 	    borrow = 0;        /* quotient=1, then just r-b */
 	    ind_b = b->Prec - 1;
 	    ind_r = ind_c + ind_b;
@@ -4853,7 +4853,7 @@ VpComp(Real *a, Real *b)
 	goto Exit;
     }
 
-    /* a and b have same sign, && signe!=0,then compare exponent */
+    /* a and b have same sign, && sign!=0,then compare exponent */
     if (a->exponent > b->exponent) {
 	val = VpGetSign(a);
 	goto Exit;
@@ -4936,7 +4936,7 @@ VPrint(FILE *fp, const char *cntl_chr, Real *a)
     j = 0;
     nd = nc = 0;        /*  nd : number of digits in fraction part(every 10 digits, */
     /*    nd<=10). */
-    /*  nc : number of caracters printed  */
+    /*  nc : number of characters printed  */
     ZeroSup = 1;        /* Flag not to print the leading zeros as 0.00xxxxEnn */
     while (*(cntl_chr + j)) {
 	if (*(cntl_chr + j) == '%' && *(cntl_chr + j + 1) != '%') {
@@ -5710,9 +5710,9 @@ Exit:
 VP_EXPORT int
 VpMidRound(Real *y, unsigned short f, ssize_t nf)
 /*
- * Round reletively from the decimal point.
+ * Round relatively from the decimal point.
  *    f: rounding mode
- *   nf: digit location to round from the the decimal point.
+ *   nf: digit location to round from the decimal point.
  */
 {
     /* fracf: any positive digit under rounding position? */
@@ -5782,7 +5782,7 @@ VpMidRound(Real *y, unsigned short f, ssize_t nf)
        */
 
     /* now check all the remaining BDIGITS for zero-ness a whole BDIGIT at a time.
-       if we spot any non-zeroness, that means that we foudn a positive digit under
+       if we spot any non-zeroness, that means that we found a positive digit under
        rounding position, and we also found a positive digit under one further than
        the rounding position, so both searches (to see if any such non-zero digit exists)
        can stop */
diff --git a/ext/bigdecimal/bigdecimal.h b/ext/bigdecimal/bigdecimal.h
index a04d1bbfea..ae32d5ffc5 100644
--- a/ext/bigdecimal/bigdecimal.h
+++ b/ext/bigdecimal/bigdecimal.h
@@ -97,7 +97,7 @@ extern VALUE rb_cBigDecimal;
 #define VP_EXCEPTION_OVERFLOW   ((unsigned short)0x0001) /* 0x0008) */
 #define VP_EXCEPTION_ZERODIVIDE ((unsigned short)0x0010)
 
-/* Following 2 exceptions cann't controlled by user */
+/* Following 2 exceptions can't controlled by user */
 #define VP_EXCEPTION_OP         ((unsigned short)0x0020)
 #define VP_EXCEPTION_MEMORY     ((unsigned short)0x0040)
 
diff --git a/ext/curses/curses.c b/ext/curses/curses.c
index e9b385c7fe..113b2bf5a9 100644
--- a/ext/curses/curses.c
+++ b/ext/curses/curses.c
@@ -12,7 +12,7 @@
  * maintainers:
  * - Takaaki Tateishi (ttate@kt.jaist.ac.jp)
  *
- * doumentation:
+ * documentation:
  * - Vincent Batts (vbatts@hashbangbash.com)
  */
 
@@ -465,7 +465,7 @@ curses_beep(VALUE obj)
 /*
  * Document-method: Curses.flash
  *
- * Flashs the screen, for visual alarm on the terminal, if possible;
+ * Flashes the screen, for visual alarm on the terminal, if possible;
  * otherwise it sounds the alert.
  *
  * see also Curses.beep
@@ -1129,7 +1129,7 @@ curses_init_color(VALUE obj, VALUE color, VALUE r, VALUE g, VALUE b)
 /*
  * Document-method: Curses.has_colors?
  *
- * Returns +true+ or +false+ depending on whether the terminal has color capbilities.
+ * Returns +true+ or +false+ depending on whether the terminal has color capabilities.
  */
 static VALUE
 curses_has_colors(VALUE obj)
@@ -1478,7 +1478,7 @@ window_s_allocate(VALUE class)
  * Document-method: Curses::Window.new
  * call-seq: new(height, width, top, left)
  *
- * Contruct a new Curses::Window with constraints of
+ * Construct a new Curses::Window with constraints of
  * +height+ lines, +width+ columns, begin at +top+ line, and begin +left+ most column.
  *
  * A new window using full screen is called as
@@ -1506,7 +1506,7 @@ window_initialize(VALUE obj, VALUE h, VALUE w, VALUE top, VALUE left)
  * Document-method: Curses::Window.subwin
  * call-seq: subwin(height, width, top, left)
  *
- * Contruct a new subwindow with constraints of
+ * Construct a new subwindow with constraints of
  * +height+ lines, +width+ columns, begin at +top+ line, and begin +left+ most column.
  *
  */
@@ -2352,7 +2352,7 @@ window_bkgd(VALUE obj, VALUE ch)
 /*
  * Document-method: Curses::Window.getbkgd
  *
- * Returns an Interer (+ch+) for the character property in the current window.
+ * Returns an Integer (+ch+) for the character property in the current window.
  */
 static VALUE
 window_getbkgd(VALUE obj)
@@ -2501,7 +2501,7 @@ window_timeout(VALUE obj, VALUE delay)
  * call-seq:
  *   new(height, width)
  *
- * Contruct a new Curses::Pad with constraints of +height+ lines, +width+
+ * Construct a new Curses::Pad with constraints of +height+ lines, +width+
  * columns
  *
  */
@@ -2530,7 +2530,7 @@ pad_initialize(VALUE obj, VALUE h, VALUE w)
  * call-seq:
  *   subpad(height, width, begin_x, begin_y)
  *
- * Contruct a new subpad with constraints of +height+ lines, +width+ columns,
+ * Construct a new subpad with constraints of +height+ lines, +width+ columns,
  * begin at +begin_x+ line, and +begin_y+ columns on the pad.
  *
  */
@@ -3581,10 +3581,10 @@ Init_curses(void)
 #endif
 #ifdef KEY_SR
     /* Document-const: KEY_SR
-     * Scroll 1 line backware (reverse)
+     * Scroll 1 line backward (reverse)
      */
     /* Document-const: SR
-     * Scroll 1 line backware (reverse)
+     * Scroll 1 line backward (reverse)
      */
     rb_curses_define_const(KEY_SR);
     rb_define_const(mKey, "SR", INT2NUM(KEY_SR));
diff --git a/ext/dl/dl.c b/ext/dl/dl.c
index 49fa7c81ac..691eecde35 100644
--- a/ext/dl/dl.c
+++ b/ext/dl/dl.c
@@ -1,7 +1,7 @@
 /*
  * ext/dl/dl.c
  *
- * doumentation:
+ * documentation:
  * - Vincent Batts (vbatts@hashbangbash.com)
  *
  */
diff --git a/ext/openssl/ossl_ssl.c b/ext/openssl/ossl_ssl.c
index 82b94a1018..d981f9cca4 100644
--- a/ext/openssl/ossl_ssl.c
+++ b/ext/openssl/ossl_ssl.c
@@ -421,7 +421,7 @@ ossl_sslctx_session_new_cb(SSL *ssl, SSL_SESSION *sess)
     }
 
     /*
-     * return 0 which means to OpenSSL that the the session is still
+     * return 0 which means to OpenSSL that the session is still
      * valid (since we created Ruby Session object) and was not freed by us
      * with SSL_SESSION_free(). Call SSLContext#remove_session(sess) in
      * session_get_cb block if you don't want OpenSSL to cache the session
diff --git a/ext/pathname/pathname.c b/ext/pathname/pathname.c
index 53f5e7cddd..2e30ff58c0 100644
--- a/ext/pathname/pathname.c
+++ b/ext/pathname/pathname.c
@@ -1155,7 +1155,7 @@ path_unlink(VALUE self)
  * Creates a new Pathname object from the given string, +path+, and returns
  * pathname object.
  *
- * In order to use this constuctor, you must first require the Pathname
+ * In order to use this constructor, you must first require the Pathname
  * standard library extension.
  *
  *	require 'pathname'
diff --git a/ext/psych/yaml/yaml.h b/ext/psych/yaml/yaml.h
index acd72ad3a3..d7777c6bab 100644
--- a/ext/psych/yaml/yaml.h
+++ b/ext/psych/yaml/yaml.h
@@ -1089,7 +1089,7 @@ typedef struct yaml_parser_s {
     yaml_error_type_t error;
     /** Error description. */
     const char *problem;
-    /** The byte about which the problem occured. */
+    /** The byte about which the problem occurred. */
     size_t problem_offset;
     /** The problematic value (@c -1 is none). */
     int problem_value;
diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index a4c51c646a..388f5e4bf6 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -302,7 +302,7 @@ readline_get(VALUE prompt)
  * 1. stdin is not tty.
  * 2. stdin was closed. (errno is EBADF after called isatty(2).)
  *
- * This method supports thread. Switchs the thread context when waits
+ * This method supports thread. Switches the thread context when waits
  * inputting line.
  *
  * Supports line edit when inputs line. Provides VI and Emacs editing mode.
diff --git a/ext/sdbm/_sdbm.c b/ext/sdbm/_sdbm.c
index 874239a276..847eb2aaf6 100644
--- a/ext/sdbm/_sdbm.c
+++ b/ext/sdbm/_sdbm.c
@@ -156,7 +156,7 @@ sdbm_open(register char *file, register int flags, register int mode)
 	if (file == NULL || !*file)
 		return errno = EINVAL, (DBM *) NULL;
 /*
- * need space for two seperate filenames
+ * need space for two separate filenames
  */
 	n = strlen(file) * 2 + strlen(DIRFEXT) + strlen(PAGFEXT) + 2;
 
@@ -392,7 +392,7 @@ makroom(register DBM *db, long int hash, int need)
 		newp = (hash & db->hmask) | (db->hmask + 1);
 		debug(("newp: %ld\n", newp));
 /*
- * write delay, read avoidence/cache shuffle:
+ * write delay, read avoidance/cache shuffle:
  * select the page for incoming pair: if key is to go to the new page,
  * write out the previous one, and copy the new one over, thus making
  * it the current page. If not, simply write the new page, and we are
diff --git a/ext/tk/README.1st b/ext/tk/README.1st
index 96564cc67b..4ffef34f1d 100644
--- a/ext/tk/README.1st
+++ b/ext/tk/README.1st
@@ -1,7 +1,7 @@
 If you want to use Ruby/Tk (tk.rb and so on), you must have tcltklib.so
 which is working correctly. When you have some troubles on compiling,
 please read README.tcltklib and README.ActiveTcl.
-Even if there is a tcltklib.so on your Ruby library directry, it will not
+Even if there is a tcltklib.so on your Ruby library directory, it will not
 work without Tcl/Tk libraries (e.g. libtcl8.4.so) on your environment.
 You must also check that your Tcl/Tk is installed properly.
 
diff --git a/ext/tk/README.ActiveTcl b/ext/tk/README.ActiveTcl
index b7f023c91b..990f612648 100644
--- a/ext/tk/README.ActiveTcl
+++ b/ext/tk/README.ActiveTcl
@@ -57,6 +57,6 @@ Based on it, the Tcl interpreter changes auto_path variable's value.
 
 Then, you'll be able to use Tcl/Tk extension libraries included in the
 ActiveTcl package (e.g. call TkPackage.require('BWidget'), and then,
-use functions/widgets of BWidget extention).
+use functions/widgets of BWidget extension).
 
                                   Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
diff --git a/ext/tk/README.tcltklib b/ext/tk/README.tcltklib
index 0064586373..cf387694b8 100644
--- a/ext/tk/README.tcltklib
+++ b/ext/tk/README.tcltklib
@@ -80,11 +80,11 @@ some or all of the following options.
  --with-tk-dir=<path>
       equal to "--with-tk-include=<path>/include --with-tk-lib=<path>/lib"
 
- --with-tcl-include=<dir>      the directry contains 'tcl.h'
- --with-tk-include=<dir>       the directry contains 'tk.h'
+ --with-tcl-include=<dir>      the directory contains 'tcl.h'
+ --with-tk-include=<dir>       the directory contains 'tk.h'
 
- --with-tcl-lib=<dir>          the directry contains 'libtcl<version>.so'
- --with-tk-lib=<dir>           the directry contains 'libtk<version>.so'
+ --with-tcl-lib=<dir>          the directory contains 'libtcl<version>.so'
+ --with-tk-lib=<dir>           the directory contains 'libtk<version>.so'
 
  --enable-mac-tcltk-framework  (MacOS X) use Tcl/Tk framework
                                (Obsolete. Please use '--enable-tcltk-framework'.)
@@ -116,12 +116,12 @@ some or all of the following options.
  --with-X11-dir=<path>
       equal to "--with-X11-include=<path>/include --with-X11-lib=<path>/lib"
 
- --with-X11-include=<dir>      the directry contais X11 header files
- --with-X11-lib=<dir>          the directry contais X11 libraries
+ --with-X11-include=<dir>      the directory contais X11 header files
+ --with-X11-lib=<dir>          the directory contais X11 libraries
 
 
 If you forgot to give the options when do 'configure' on toplevel
-directry of Ruby sources, please try something like as the followings.
+directory of Ruby sources, please try something like as the followings.
 
  $ cd ext/tcltklib
  $ rm Makefile
diff --git a/ext/tk/lib/tk/image.rb b/ext/tk/lib/tk/image.rb
index d2b0305dcd..972383982f 100644
--- a/ext/tk/lib/tk/image.rb
+++ b/ext/tk/lib/tk/image.rb
@@ -132,7 +132,7 @@ end
 # exists to allow additional image file formats to be added easily.
 #
 # This class documentation is a copy from the original Tcl/Tk at
-# http://www.tcl.tk/man/tcl8.5/TkCmd/photo.htm with some rewrited parts.
+# http://www.tcl.tk/man/tcl8.5/TkCmd/photo.htm with some rewritten parts.
 class TkPhotoImage<TkImage
   NullArgOptionKeys = [ "shrink", "grayscale" ]
 
diff --git a/ext/tk/lib/tkextlib/SUPPORT_STATUS b/ext/tk/lib/tkextlib/SUPPORT_STATUS
index 522039b11a..865181a766 100644
--- a/ext/tk/lib/tkextlib/SUPPORT_STATUS
+++ b/ext/tk/lib/tkextlib/SUPPORT_STATUS
@@ -3,7 +3,7 @@
 
   *** RELEASE_DATE of the libraries => see 'tkextlib/version.rb' ***
 
-The following list shows *CURRENT* status when this file was modifyed
+The following list shows *CURRENT* status when this file was modified
 at last. If you want to add other Tcl/Tk extensions to the planed list
 (or change its status position), please request them at the ruby-talk,
 ruby-list, or ruby-dev ML. Although we cannot promise to support your
@@ -34,7 +34,7 @@ script may give you some hints about that.
     If you cannot use installed Tcl/Tk extension, please check the
     followings.
 
-     (1) On your Tcl/Tk, does the extention work?
+     (1) On your Tcl/Tk, does the extension work?
 
      (2) Do DLL libraries of the extension exist on DLL load-path?
          (See also "<ruby archive>/ext/tcltklib/README.ActiveTcl")
@@ -44,8 +44,8 @@ script may give you some hints about that.
 
     The check results may request you to do some setup operations
     before using the extension. If so, then please write the step
-    of setup oprations into the "setup.rb" file in the directory
-    of the wrapper libraries for the extention (It is the wrapper
+    of setup operations into the "setup.rb" file in the directory
+    of the wrapper libraries for the extension (It is the wrapper
     libraries have the standard structure of the libraries in this
     directory). The "setup" file is required before requiring the
     Tcl library package (TkPackage.require(<libname>)).
diff --git a/ext/tk/lib/tkextlib/tile/style.rb b/ext/tk/lib/tkextlib/tile/style.rb
index 108d81f88b..83a0c9a2e8 100644
--- a/ext/tk/lib/tkextlib/tile/style.rb
+++ b/ext/tk/lib/tkextlib/tile/style.rb
@@ -21,8 +21,8 @@ class << Tk::Tile::Style
     TkCommandNames = ['style'.freeze].freeze
 
     # --- Tk::Tile::Style.__define_wrapper_proc_for_compatibility__! ---
-    # On Ttk (Tile) extension, 'style' command has imcompatible changes
-    # depend on the version of the extention. It requires modifying the
+    # On Ttk (Tile) extension, 'style' command has incompatible changes
+    # depend on the version of the extension. It requires modifying the
     # Tcl/Tk scripts to define local styles. The rule for modification
     # is a simple one. But, if users want to keep compatibility between
     # versions of the extension, they will have to contrive to do that.
diff --git a/ext/tk/sample/figmemo_sample.rb b/ext/tk/sample/figmemo_sample.rb
index 25ec618fe8..da6c41797e 100644
--- a/ext/tk/sample/figmemo_sample.rb
+++ b/ext/tk/sample/figmemo_sample.rb
@@ -5,7 +5,7 @@ begin
   # try to use Img extension
   require 'tkextlib/tkimg'
 rescue Exception
-  # cannot use Img extention --> ignore
+  # cannot use Img extension --> ignore
 end
 
 
diff --git a/ext/tk/sample/msgs_tk/README b/ext/tk/sample/msgs_tk/README
index 062ec20cf8..949ee7a896 100644
--- a/ext/tk/sample/msgs_tk/README
+++ b/ext/tk/sample/msgs_tk/README
@@ -1,4 +1,4 @@
 Almost all of Message-Catalog files in this directory are quoted
 from Tcl/Tk8.5a1 source archive (only a little are modified for
 'tkmsgcat-load_tk.rb'). Please read the file 'license.terms' in
-this directry (That was included in demo directory of Tcl/Tk8.5a1).
+this directory (That was included in demo directory of Tcl/Tk8.5a1).
diff --git a/ext/tk/sample/tkextlib/blt/readme.txt b/ext/tk/sample/tkextlib/blt/readme.txt
index 4183c01ecb..8ac1044b0b 100644
--- a/ext/tk/sample/tkextlib/blt/readme.txt
+++ b/ext/tk/sample/tkextlib/blt/readme.txt
@@ -1,2 +1,2 @@
 The scripts and image files in this directory are based on demo files
-of Tcl/Tk's BLT extention.
+of Tcl/Tk's BLT extension.
diff --git a/ext/tk/sample/tkextlib/bwidget/Orig_LICENSE.txt b/ext/tk/sample/tkextlib/bwidget/Orig_LICENSE.txt
index 0c4c16fe47..b1241a6501 100644
--- a/ext/tk/sample/tkextlib/bwidget/Orig_LICENSE.txt
+++ b/ext/tk/sample/tkextlib/bwidget/Orig_LICENSE.txt
@@ -2,8 +2,8 @@
   ######################################################################
   ###  The following text is the original 'LICENSE.txt' of BWidget   ###
   ###  extension.                                                    ###
-  ###  Original Tcl source files are not include in this directry,   ###
-  ###  because of all of them are rewrited to Ruby files.            ###
+  ###  Original Tcl source files are not include in this directory,  ###
+  ###  because of all of them are rewritten to Ruby files.           ###
   ###  However, the bitmap data files ('bwidgtet.xbm' and 'x1.xbm')  ###
   ###  included in this directory are quoted from BWidget source     ###
   ###  archive. So, those bitmaps are under the following license.   ###
diff --git a/ext/tk/sample/tkextlib/iwidgets/catalog_demo/Orig_LICENSE.txt b/ext/tk/sample/tkextlib/iwidgets/catalog_demo/Orig_LICENSE.txt
index 22f787609d..1f33d9e55d 100644
--- a/ext/tk/sample/tkextlib/iwidgets/catalog_demo/Orig_LICENSE.txt
+++ b/ext/tk/sample/tkextlib/iwidgets/catalog_demo/Orig_LICENSE.txt
@@ -1,9 +1,9 @@
 
   #######################################################################
-  ###  The following text is the original 'license.terms' of iwidges  ###
+  ###  The following text is the original 'license.terms' of iwidgets ###
   ###  extension.                                                     ###
-  ###  Original Tcl source files are not include in this directry,    ###
-  ###  because of all of them are rewrited to Ruby files.             ###
+  ###  Original Tcl source files are not include in this directory,   ###
+  ###  because of all of them are rewritten to Ruby files.            ###
   ###  However, the image data files in the 'images' directory are    ###
   ###  quoted from iwidgets source archive.                           ###
   #######################################################################
diff --git a/ext/tk/sample/tkextlib/tcllib/Orig_LICENSE.txt b/ext/tk/sample/tkextlib/tcllib/Orig_LICENSE.txt
index 272853870c..b02ea605d7 100644
--- a/ext/tk/sample/tkextlib/tcllib/Orig_LICENSE.txt
+++ b/ext/tk/sample/tkextlib/tcllib/Orig_LICENSE.txt
@@ -2,8 +2,8 @@
   >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
   >>>  The following text is the original 'license.term' of tklib    <<<
   >>>  extension.                                                    <<<
-  >>>  Original Tcl files are not include in this directry, because  <<<
-  >>>  of all of them are rewrited to Ruby files.                    <<<
+  >>>  Original Tcl files are not include in this directory, because <<<
+  >>>  of all of them are rewritten to Ruby files.                   <<<
   >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 
 This software is copyrighted by Ajuba Solutions and other parties.
diff --git a/ext/tk/sample/tkextlib/tkimg/demo.rb b/ext/tk/sample/tkextlib/tkimg/demo.rb
index d453e8ee9d..8016c263a6 100644
--- a/ext/tk/sample/tkextlib/tkimg/demo.rb
+++ b/ext/tk/sample/tkextlib/tkimg/demo.rb
@@ -2,7 +2,7 @@
 #
 #  Tk::Img demo
 #
-#    --  This script is based on demo.tcl of Tcl/Tk's 'Img' extention.
+#    --  This script is based on demo.tcl of Tcl/Tk's 'Img' extension.
 #        Image data in this script is those of demo.tcl.
 #        Please read 'license_terms_of_Img_extension' file.
 #
diff --git a/ext/tk/sample/tkextlib/tkimg/readme.txt b/ext/tk/sample/tkextlib/tkimg/readme.txt
index 8e4b0163b1..8fd1a3e67d 100644
--- a/ext/tk/sample/tkextlib/tkimg/readme.txt
+++ b/ext/tk/sample/tkextlib/tkimg/readme.txt
@@ -1,3 +1,3 @@
-The script 'demo.rb' is based on 'demo.tcl' of Tcl/Tk's 'Img' extention.
+The script 'demo.rb' is based on 'demo.tcl' of Tcl/Tk's 'Img' extension.
 Image data in 'demo.rb' is those of 'demo.tcl'.
 Please read 'license_terms_of_Img_extension' file.
diff --git a/ext/tk/sample/tkextlib/tktable/Orig_LICENSE.txt b/ext/tk/sample/tkextlib/tktable/Orig_LICENSE.txt
index dd176a7ccf..b06b0b463b 100644
--- a/ext/tk/sample/tkextlib/tktable/Orig_LICENSE.txt
+++ b/ext/tk/sample/tkextlib/tktable/Orig_LICENSE.txt
@@ -2,8 +2,8 @@
   #######################################################################
   ###  The following text is the original 'license.txt' of tktable    ###
   ###  extension.                                                     ###
-  ###  Original Tcl source files are not include in this directry,    ###
-  ###  because of all of them are rewrited to Ruby files.             ###
+  ###  Original Tcl source files are not include in this directory,   ###
+  ###  because of all of them are rewritten to Ruby files.            ###
   ###  However, the image data file is quoted from iwidgets source    ###
   ###  archive.                                                       ###
   #######################################################################
diff --git a/ext/tk/sample/tkextlib/treectrl/readme.txt b/ext/tk/sample/tkextlib/treectrl/readme.txt
index bda4f63d88..81e13b24aa 100644
--- a/ext/tk/sample/tkextlib/treectrl/readme.txt
+++ b/ext/tk/sample/tkextlib/treectrl/readme.txt
@@ -1,2 +1,2 @@
 The scripts and image files in this directory are based on demo files
-of Tcl/Tk's TreeCtrl extention.
+of Tcl/Tk's TreeCtrl extension.
diff --git a/ext/tk/sample/tkextlib/vu/Orig_LICENSE.txt b/ext/tk/sample/tkextlib/vu/Orig_LICENSE.txt
index f5f2f770cf..f2e0edcf42 100644
--- a/ext/tk/sample/tkextlib/vu/Orig_LICENSE.txt
+++ b/ext/tk/sample/tkextlib/vu/Orig_LICENSE.txt
@@ -1,8 +1,8 @@
 
   >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
   >>>  The following text is the original 'license.txt' of vu extension.  <<<
-  >>>  Original Tcl source files are not include in this directry,        <<<
-  >>>  because of all of them are rewrited to Ruby files.                 <<<
+  >>>  Original Tcl source files are not include in this directory,       <<<
+  >>>  because of all of them are rewritten to Ruby files.                <<<
   >>>  However, the bitmap data file included in this directory is the    <<<
   >>>  same file of vu extension. So, the bitmap data file is under the   <<<
   >>>  following license.                                                 <<<