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git-gui: Make usage statement visible on Windows.

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On Windows stdout and stderr are not connected to anything so the usage
statement is never shown to the user when an error is made with a command
line like 'git gui browser'. Use a messagebox on windows.

Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
This commit is contained in:
Pat Thoyts 2010-08-08 00:07:01 +01:00
parent 2810a58dba
commit ea47503d4d
1 changed files with 7 additions and 1 deletions
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8
git-gui.sh
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@ -2845,7 +2845,13 @@ bind all <$M1B-Key-W> {destroy [winfo toplevel %W]}
set subcommand_args {}
proc usage {} {
puts stderr "usage: $::argv0 $::subcommand $::subcommand_args"
set s "usage: $::argv0 $::subcommand $::subcommand_args"
if {[tk windowingsystem] eq "win32"} {
wm withdraw .
tk_messageBox -icon info -title "Usage" -message $s
} else {
puts stderr $s
}
exit 1
}