[PATCH] gitk: Fix display of copyright symbol in non-utf-8 locales

[Jonathan Nieder <jrnieder@gmail.com>]

Unless the ‘-encoding’ option is supplied, wish interprets source
files using the default system encoding, which depends on locale.
This can cause the copyright symbol to display incorrectly in gitk’s
about dialog.

The -encoding option was added to tcl in version 8.1.

Reported-by: Pat Thoyts <patthoyts@users.sourceforge.net>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
Hi,

Pat Thoyts wrote:

> The script file uses utf-8 encoding but when sourced it will be read
> using the default system encoding which is never utf8 on windows. This
> causes the copyright symbol to display incorrectly in the about dialog.

I can reproduce this in Linux with LANG=de_DE@euro ./gitk.

> Using the unicode escape sequence avoids incorrect decoding but does
> require a double escape in the .po files.

When I tried applying your patch, running “make update-po” seemed to
undo its effect on translations.  I am also worried about what would
happen in locales where ASCII is not a subset of the native character
set, or other uses of non-ASCII characters in the translated messages.

Maybe the following would be safer?  I haven’t looked at the effect on
translations yet.

 gitk |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/gitk b/gitk
index 1f36a3e..a7c9a9a 100755
--- a/gitk
+++ b/gitk
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Tcl ignores the next line -*- tcl -*- \
-exec wish "$0" -- "$@"
+exec wish -encoding utf-8 "$0" -- "$@"
 
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