enable whitespace checking of test scripts

diff --git a/git-gui/git-gui.sh b/git-gui/git-gui.sh
index 9df49710e1b378af1f49c5ce3c8c8c48731d7d38..e6e88902f1dd1f678eaa5d1dc2d62f8dcacef484 100755 (executable)
--- a/git-gui/git-gui.sh
+++ b/git-gui/git-gui.sh
@@ -122,6 +122,14 @@ set _reponame {}
 set _iscygwin {}
 set _search_path {}
 
+set _trace [lsearch -exact $argv --trace]
+if {$_trace >= 0} {
+       set argv [lreplace $argv $_trace $_trace]
+       set _trace 1
+} else {
+       set _trace 0
+}
+
 proc appname {} {
        global _appname
        return $_appname
@@ -245,6 +253,21 @@ proc get_config {name} {
 ##
 ## handy utils
 
+proc _trace_exec {cmd} {
+       if {!$::_trace} return
+       set d {}
+       foreach v $cmd {
+               if {$d ne {}} {
+                       append d { }
+               }
+               if {[regexp {[ \t\r\n'"$?*]} $v]} {
+                       set v [sq $v]
+               }
+               append d $v
+       }
+       puts stderr $d
+}
+
 proc _git_cmd {name} {
        global _git_cmd_path
 
@@ -339,7 +362,7 @@ proc _lappend_nice {cmd_var} {
 }
 
 proc git {args} {
-       set opt [list exec]
+       set opt [list]
 
        while {1} {
                switch -- [lindex $args 0] {
@@ -359,12 +382,18 @@ proc git {args} {
        set cmdp [_git_cmd [lindex $args 0]]
        set args [lrange $args 1 end]
 
-       return [eval $opt $cmdp $args]
+       _trace_exec [concat $opt $cmdp $args]
+       set result [eval exec $opt $cmdp $args]
+       if {$::_trace} {
+               puts stderr "< $result"
+       }
+       return $result
 }
 
 proc _open_stdout_stderr {cmd} {
+       _trace_exec $cmd
        if {[catch {
-                       set fd [open $cmd r]
+                       set fd [open [concat [list | ] $cmd] r]
                } err]} {
                if {   [lindex $cmd end] eq {2>@1}
                    && $err eq {can not find channel named "1"}
@@ -375,6 +404,7 @@ proc _open_stdout_stderr {cmd} {
                        # to try to start it a second time.
                        #
                        set fd [open [concat \
+                               [list | ] \
                                [lrange $cmd 0 end-1] \
                                [list |& cat] \
                                ] r]
@@ -387,7 +417,7 @@ proc _open_stdout_stderr {cmd} {
 }
 
 proc git_read {args} {
-       set opt [list |]
+       set opt [list]
 
        while {1} {
                switch -- [lindex $args 0] {
@@ -415,7 +445,7 @@ proc git_read {args} {
 }
 
 proc git_write {args} {
-       set opt [list |]
+       set opt [list]
 
        while {1} {
                switch -- [lindex $args 0] {
@@ -435,7 +465,8 @@ proc git_write {args} {
        set cmdp [_git_cmd [lindex $args 0]]
        set args [lrange $args 1 end]
 
-       return [open [concat $opt $cmdp $args] w]
+       _trace_exec [concat $opt $cmdp $args]
+       return [open [concat [list | ] $opt $cmdp $args] w]
 }
 
 proc githook_read {hook_name args} {
@@ -455,12 +486,12 @@ proc githook_read {hook_name args} {
                }
 
                set scr {if test -x "$1";then exec "$@";fi}
-               set sh_c [list | $interp -c $scr $interp $pchook]
+               set sh_c [list $interp -c $scr $interp $pchook]
                return [_open_stdout_stderr [concat $sh_c $args]]
        }
 
        if {[file executable $pchook]} {
-               return [_open_stdout_stderr [concat [list | $pchook] $args]]
+               return [_open_stdout_stderr [concat [list $pchook] $args]]
        }
 
        return {}
@@ -1096,27 +1127,18 @@ proc rescan {after {honor_trustmtime 1}} {
 }
 
 if {[is_Cygwin]} {
-       set is_git_info_link {}
        set is_git_info_exclude {}
        proc have_info_exclude {} {
-               global is_git_info_link is_git_info_exclude
-
-               if {$is_git_info_link eq {}} {
-                       set is_git_info_link [file isfile [gitdir info.lnk]]
-               }
+               global is_git_info_exclude
 
-               if {$is_git_info_link} {
-                       if {$is_git_info_exclude eq {}} {
-                               if {[catch {exec test -f [gitdir info exclude]}]} {
-                                       set is_git_info_exclude 0
-                               } else {
-                                       set is_git_info_exclude 1
-                               }
+               if {$is_git_info_exclude eq {}} {
+                       if {[catch {exec test -f [gitdir info exclude]}]} {
+                               set is_git_info_exclude 0
+                       } else {
+                               set is_git_info_exclude 1
                        }
-                       return $is_git_info_exclude
-               } else {
-                       return [file readable [gitdir info exclude]]
                }
+               return $is_git_info_exclude
        }
 } else {
        proc have_info_exclude {} {