1 files changed, 28 insertions, 26 deletions

diff --git a/unix/tclUnixFile.c b/unix/tclUnixFile.c
index fe3c608..c213050 100644
--- a/unix/tclUnixFile.c
+++ b/unix/tclUnixFile.c
@@ -22,7 +22,8 @@ static int NativeMatchType(Tcl_Interp *interp, const char* nativeEntry,
  * TclpFindExecutable --
  *
  *	This function computes the absolute path name of the current
- *	application, given its argv[0] value.
+ *	application, given its argv[0] value. For Cygwin, argv[0] is
+ *	ignored and the path is determined the same as under win32.
  *
  * Results:
  *	None.
@@ -38,10 +39,25 @@ TclpFindExecutable(
     const char *argv0)		/* The value of the application's argv[0]
 				 * (native). */
 {
+    Tcl_Encoding encoding;
+#ifdef __CYGWIN__
+    int length;
+    char buf[PATH_MAX * 2];
+    char name[PATH_MAX * TCL_UTF_MAX + 1];
+    GetModuleFileNameW(NULL, buf, PATH_MAX);
+    cygwin_conv_path(3, buf, name, PATH_MAX);
+    length = strlen(name);
+    if ((length > 4) && !strcasecmp(name + length - 4, ".exe")) {
+	/* Strip '.exe' part. */
+	length -= 4;
+    }
+    encoding = Tcl_GetEncoding(NULL, NULL);
+    TclSetObjNameOfExecutable(
+	    Tcl_NewStringObj(name, length), encoding);
+#else
     const char *name, *p;
     Tcl_StatBuf statBuf;
     Tcl_DString buffer, nameString, cwd, utfName;
-    Tcl_Encoding encoding;
 
     if (argv0 == NULL) {
 	return;
@@ -89,11 +105,11 @@ TclpFindExecutable(
 	while ((*p != ':') && (*p != 0)) {
 	    p++;
 	}
-	Tcl_DStringSetLength(&buffer, 0);
+	TclDStringClear(&buffer);
 	if (p != name) {
 	    Tcl_DStringAppend(&buffer, name, p - name);
 	    if (p[-1] != '/') {
-		Tcl_DStringAppend(&buffer, "/", 1);
+		TclDStringAppendLiteral(&buffer, "/");
 	    }
 	}
 	name = Tcl_DStringAppend(&buffer, argv0, -1);
@@ -158,11 +174,10 @@ TclpFindExecutable(
     Tcl_UtfToExternalDString(NULL, Tcl_DStringValue(&cwd),
 	    Tcl_DStringLength(&cwd), &buffer);
     if (Tcl_DStringValue(&cwd)[Tcl_DStringLength(&cwd) -1] != '/') {
-	Tcl_DStringAppend(&buffer, "/", 1);
+	TclDStringAppendLiteral(&buffer, "/");
     }
     Tcl_DStringFree(&cwd);
-    Tcl_DStringAppend(&buffer, Tcl_DStringValue(&nameString),
-	    Tcl_DStringLength(&nameString));
+    TclDStringAppendDString(&buffer, &nameString);
     Tcl_DStringFree(&nameString);
 
     encoding = Tcl_GetEncoding(NULL, NULL);
@@ -174,6 +189,7 @@ TclpFindExecutable(
 
   done:
     Tcl_DStringFree(&buffer);
+#endif
 }
 
 /*
@@ -271,7 +287,7 @@ TclpMatchInDirectory(
 	     */
 
 	    if (dirName[dirLength-1] != '/') {
-		dirName = Tcl_DStringAppend(&dsOrig, "/", 1);
+		dirName = TclDStringAppendLiteral(&dsOrig, "/");
 		dirLength++;
 	    }
 	}
@@ -974,12 +990,8 @@ TclpObjLink(
 	}
 
 	Tcl_ExternalToUtfDString(NULL, link, length, &ds);
-	linkPtr = Tcl_NewStringObj(Tcl_DStringValue(&ds),
-		Tcl_DStringLength(&ds));
-	Tcl_DStringFree(&ds);
-	if (linkPtr != NULL) {
-	    Tcl_IncrRefCount(linkPtr);
-	}
+	linkPtr = TclDStringToObj(&ds);
+	Tcl_IncrRefCount(linkPtr);
 	return linkPtr;
     }
 }
@@ -1041,19 +1053,9 @@ TclpNativeToNormalized(
     ClientData clientData)
 {
     Tcl_DString ds;
-    Tcl_Obj *objPtr;
-    int len;
-
-    const char *copy;
-    Tcl_ExternalToUtfDString(NULL, (const char*)clientData, -1, &ds);
-
-    copy = Tcl_DStringValue(&ds);
-    len = Tcl_DStringLength(&ds);
-
-    objPtr = Tcl_NewStringObj(copy,len);
-    Tcl_DStringFree(&ds);
 
-    return objPtr;
+    Tcl_ExternalToUtfDString(NULL, (const char *) clientData, -1, &ds);
+    return TclDStringToObj(&ds);
 }
 
 /*