Assorted spelling tweaks and fixes.

dlls/kernel32/tests/file.c

@@ -3354,7 +3354,7 @@ static void test_OpenFileById(void)
     ret2 = GetTempPathA(sizeof(tempPath), tempPath);
     ok(ret2, "OpenFileById: GetTempPath failed, got error %u.\n", GetLastError());
 
-    /* ensure the existance of a file in the temp folder */
+    /* ensure the existence of a file in the temp folder */
     ret2 = GetTempFileNameA(tempPath, "abc", 0, tempFileName);
     ok(ret2, "OpenFileById: GetTempFileNameA failed, got error %u.\n", GetLastError());
     ok(GetFileAttributesA(tempFileName) != INVALID_FILE_ATTRIBUTES,

dlls/wininet/urlcache.c

@@ -2456,7 +2456,7 @@ static int dword_cmp(const void *p1, const void *p2)
  *
  * PARAMETERS
  *   cache_path    [I] Which volume to free up from, or NULL if you don't care.
- *   size          [I] How many percents of the cache should be free.
+ *   size          [I] Percentage of the cache that should be free.
  *   filter        [I] Which entries can't be deleted (CacheEntryType)
  *
  * RETURNS

programs/cmd/builtins.c

@@ -478,10 +478,10 @@ static BOOL WCMD_ManualCopy(WCHAR *srcname, WCHAR *dstname, BOOL ascii, BOOL app
  *  Syntax on command line is
  *   ... /a | /b   filename  /a /b {[ + filename /a /b]}  [dest /a /b]
  *  Where first /a or /b sets 'mode in operation' until another is found
- *  once another is found, it applies to the file preceeding the /a or /b
+ *  once another is found, it applies to the file preceding the /a or /b
  *  In addition each filename can contain wildcards
- * To make matters worse, the + may be in the same parameter (ie no whitespace)
- *  or with whitespace separating it
+ * To make matters worse, the + may be in the same parameter (i.e. no
+ *  whitespace) or with whitespace separating it
  *
  * ASCII mode on read == read and stop at first EOF
  * ASCII mode on write == append EOF to destination
@@ -944,7 +944,7 @@ void WCMD_copy(WCHAR * args) {
     }
   }
 
-  /* Exit out of the routine, freeing any remaing allocated memory */
+  /* Exit out of the routine, freeing any remaining allocated memory */
 exitreturn:
 
   thiscopy = sourcelist;

programs/cmd/tests/test_builtins.cmd

@@ -1743,7 +1743,7 @@ if errorlevel 1 echo Incorrect errorlevel
 call :CheckExist file1
 cd ..
 
-rem Simple single file copy, destination supplied as non existant directory
+rem Simple single file copy, destination supplied as nonexistent directory
 copy file1 dir2\ >nul 2>&1
 if not errorlevel 1 echo Incorrect errorlevel
 call :CheckNotExist dir2 dir2\file1
@@ -1767,7 +1767,7 @@ if errorlevel 1 echo Incorrect errorlevel
 call :CheckExist file1 file2 file3
 cd ..
 
-rem Simple wildcarded file copy, destination supplied as non existant directory
+rem Simple wildcarded file copy, destination supplied as nonexistent directory
 copy file? dir2\ >nul 2>&1
 if not errorlevel 1 echo Incorrect errorlevel
 call :CheckNotExist dir2 dir2\file1 dir2\file2 dir2\file3
@@ -1923,7 +1923,7 @@ rem All 2 have eof's, plus an extra = 6 + 12 + eof
 copy /b file1_plus_eof + file3_plus_eof file123_mixed_copy6 /a >nul 2>&1
 call :CheckFileSize file123_mixed_copy6 19
 
-rem One file has EOF, but doesnt get an extra one, ie 6
+rem One file has EOF, but doesn't get an extra one, i.e. 6
 copy /b file1_plus_eof file123_mixed_copy7 /a >nul 2>&1
 call :CheckFileSize file123_mixed_copy7 6
 

programs/cmd/tests/test_cmdline.cmd

@@ -53,7 +53,7 @@ rem - Try cmd.exe /k as well
 cmd.exe /k "copy file1 file2 >nul && exit"
 echo No prompts or I would not get here2
 
-rem Non existing variable expansion is as per command line, i.e. left as-is
+rem Nonexistent variable expansion is as per command line, i.e. left as-is
 cmd.exe /c echo %%hello1%%
 cmd.exe /c echo %%hello2
 cmd.exe /c echo %%hello3^:h=t%%

programs/cmd/wcmdmain.c

@@ -2393,7 +2393,7 @@ int wmain (int argc, WCHAR *argvW[])
       }
       else /* handle `cmd /cnotepad.exe` and `cmd /x/c ...` */
       {
-          /* Do not step to next paramater, instead carry on parsing this one */
+          /* Do not step to next parameter, instead carry on parsing this one */
           argPos+=2;
       }
 
@@ -2413,7 +2413,7 @@ int wmain (int argc, WCHAR *argvW[])
       int     len;
       WCHAR   *q1 = NULL,*q2 = NULL,*p;
 
-      /* Handle very edge case error scenarion, "cmd.exe /c" ie when there are no
+      /* Handle very edge case error scenario, "cmd.exe /c" ie when there are no
        * parameters after the /C or /K by pretending there was a single space     */
       if (argPos == NULL) argPos = (WCHAR *)spaceW;
 
@@ -2468,7 +2468,7 @@ int wmain (int argc, WCHAR *argvW[])
       WINE_TRACE("/c command line: '%s'\n", wine_dbgstr_w(cmd));
 
       /* Finally, we only stay in new mode IF the first parameter is quoted and
-         is a valid executable, ie must exist, otherwise drop back to old mode  */
+         is a valid executable, i.e. must exist, otherwise drop back to old mode  */
       if (!opt_s) {
         WCHAR *thisArg = WCMD_parameter(cmd, 0, NULL, NULL, FALSE, TRUE);
         WCHAR  pathext[MAXSTRING];