gitk: remove code targeting git <= 1.7.2

gitk has a few code fragments that are used only for git versions <=
1.7.2 that do not support submodules, notes, word differences, or
textconv filters. We just set the minimum git version higher than 1.7.2
so these code fragments have no effect. Delete them.

Helped-by: Johannes Sixt <[email protected]>
Signed-off-by: Mark Levedahl <[email protected]>

Author: mark987

gitk

@@ -361,7 +361,7 @@ proc unmerged_files {files} {
 proc parseviewargs {n arglist} {
     global vdatemode vmergeonly vflags vdflags vrevs vfiltered vorigargs env
     global vinlinediff
-    global worddiff git_version
+    global worddiff
 
     set vdatemode($n) 0
     set vmergeonly($n) 0
@@ -412,14 +412,10 @@ proc parseviewargs {n arglist} {
             "--color-words*" - "--word-diff=color" {
                 # These trigger a word diff in the console interface,
                 # so help the user by enabling our own support
-                if {[package vcompare $git_version "1.7.2"] >= 0} {
-                    set worddiff [mc "Color words"]
-                }
+                set worddiff [mc "Color words"]
             }
             "--word-diff*" {
-                if {[package vcompare $git_version "1.7.2"] >= 0} {
-                    set worddiff [mc "Markup words"]
-                }
+                set worddiff [mc "Markup words"]
             }
             "--stat=*" - "--numstat" - "--shortstat" - "--summary" -
             "--check" - "--exit-code" - "--quiet" - "--topo-order" -
@@ -567,7 +563,6 @@ proc start_rev_list {view} {
     global viewactive viewinstances vmergeonly
     global mainheadid viewmainheadid viewmainheadid_orig
     global vcanopt vflags vrevs vorigargs
-    global show_notes
 
     set startmsecs [clock clicks -milliseconds]
     set commitidx($view) 0
@@ -617,7 +612,7 @@ proc start_rev_list {view} {
     }
 
     if {[catch {
-        set fd [safe_open_command_redirect [concat git log --no-color -z --pretty=raw $show_notes \
+        set fd [safe_open_command_redirect [concat git log --no-color -z --pretty=raw --show-notes \
                         --parents --boundary $args --stdin] \
                         [list "<<[join [concat $revs "--" $files] "\n"]"]]
     } err]} {
@@ -713,7 +708,6 @@ proc updatecommits {} {
     global mainheadid viewmainheadid viewmainheadid_orig pending_select
     global hasworktree
     global varcid vposids vnegids vflags vrevs
-    global show_notes
 
     set hasworktree [hasworktree]
     rereadrefs
@@ -770,7 +764,7 @@ proc updatecommits {} {
         set args $vorigargs($view)
     }
     if {[catch {
-        set fd [safe_open_command_redirect [concat git log --no-color -z --pretty=raw $show_notes \
+        set fd [safe_open_command_redirect [concat git log --no-color -z --pretty=raw --show-notes \
                         --parents --boundary $args --stdin] \
                         [list "<<[join [concat $revs "--" $vfilelimit($view)] "\n"]"]]
     } err]} {
@@ -2296,7 +2290,6 @@ proc makewindow {} {
     global fprogitem fprogcoord lastprogupdate progupdatepending
     global rprogitem rprogcoord rownumsel numcommits
     global have_tk85 have_tk86 use_ttk NS
-    global git_version
     global worddiff
 
     # The "mc" arguments here are purely so that xgettext
@@ -2617,12 +2610,10 @@ proc makewindow {} {
     pack .bleft.mid.ignspace -side left -padx 5
 
     set worddiff [mc "Line diff"]
-    if {[package vcompare $git_version "1.7.2"] >= 0} {
-        makedroplist .bleft.mid.worddiff worddiff [mc "Line diff"] \
-            [mc "Markup words"] [mc "Color words"]
-        trace add variable worddiff write changeworddiff
-        pack .bleft.mid.worddiff -side left -padx 5
-    }
+    makedroplist .bleft.mid.worddiff worddiff [mc "Line diff"] \
+        [mc "Markup words"] [mc "Color words"]
+    trace add variable worddiff write changeworddiff
+    pack .bleft.mid.worddiff -side left -padx 5
 
     set ctext .bleft.bottom.ctext
     text $ctext -background $bgcolor -foreground $fgcolor \
@@ -5539,15 +5530,11 @@ proc dohidelocalchanges {} {
 # spawn off a process to do git diff-index --cached HEAD
 proc dodiffindex {} {
     global lserial showlocalchanges vfilelimit curview
-    global hasworktree git_version
+    global hasworktree
 
     if {!$showlocalchanges || !$hasworktree} return
     incr lserial
-    if {[package vcompare $git_version "1.7.2"] >= 0} {
-        set cmd "git diff-index --cached --ignore-submodules=dirty HEAD"
-    } else {
-        set cmd "git diff-index --cached HEAD"
-    }
+    set cmd "git diff-index --cached --ignore-submodules=dirty HEAD"
     if {$vfilelimit($curview) ne {}} {
         set cmd [concat $cmd -- $vfilelimit($curview)]
     }
@@ -8095,7 +8082,7 @@ proc addtocflist {ids} {
 }
 
 proc diffcmd {ids flags} {
-    global log_showroot nullid nullid2 git_version
+    global log_showroot nullid nullid2
 
     set i [lsearch -exact $ids $nullid]
     set j [lsearch -exact $ids $nullid2]
@@ -8116,9 +8103,7 @@ proc diffcmd {ids flags} {
             }
         }
     } elseif {$j >= 0} {
-        if {[package vcompare $git_version "1.7.2"] >= 0} {
-            set flags "$flags --ignore-submodules=dirty"
-        }
+        set flags "$flags --ignore-submodules=dirty"
         set cmd [concat git diff-index --cached $flags]
         if {[llength $ids] > 1} {
             # comparing index with specific revision
@@ -8247,17 +8232,8 @@ proc getblobdiffs {ids} {
     global ignorespace
     global worddiff
     global limitdiffs vfilelimit curview
-    global git_version
 
-    set textconv {}
-    if {[package vcompare $git_version "1.6.1"] >= 0} {
-        set textconv "--textconv"
-    }
-    set submodule {}
-    if {[package vcompare $git_version "1.6.6"] >= 0} {
-        set submodule "--submodule"
-    }
-    set cmd [diffcmd $ids "-p $textconv $submodule  -C --cc --no-commit-id -U$diffcontext"]
+    set cmd [diffcmd $ids "-p --textconv --submodule -C --cc --no-commit-id -U$diffcontext"]
     if {$ignorespace} {
         append cmd " -w"
     }
@@ -12836,11 +12812,6 @@ if {$use_ttk} {
     setttkstyle
 }
 
-set show_notes {}
-if {[package vcompare $git_version "1.6.6.2"] >= 0} {
-    set show_notes "--show-notes"
-}
-
 set appname "gitk"
 
 set runq {}