Merge branch 'master' of https://github.com/j6t/git-gui

* 'master' of https://github.com/j6t/git-gui:
  git-gui: grey out comment lines in commit message
  git-gui: wire up "git-gui--askyesno" with Meson
  git-gui: massage "git-gui--askyesno" with "generate-script.sh"
  git-gui: prefer shell at "/bin/sh" with Meson
  git-gui: fix use of GIT_CEILING_DIRECTORIES
  git-gui: shift tabstops to account for the first column of patch text

git-gui/.gitignore

@@ -5,4 +5,5 @@ GIT-GUI-BUILD-OPTIONS
 GIT-VERSION-FILE
 git-gui
 git-gui--askpass
+git-gui--askyesno
 lib/tclIndex

git-gui/GIT-VERSION-GEN

@@ -5,19 +5,27 @@ DEF_VER=0.21.GITGUI
 LF='
 '
 
-if test "$#" -ne 2
+if test "$#" -lt 2
 then
-	echo >&2 "usage: $0 <SOURCE_DIR> <OUTPUT>"
+	echo >&2 "usage: $0 <SOURCE_DIR> <OUTPUT> [<PARENT_PROJECT_DIR>]"
 	exit 1
 fi
 
 SOURCE_DIR="$1"
 OUTPUT="$2"
+PARENT_PROJECT_DIR="$3"
 
 # Protect us from reading Git version information outside of the Git directory
 # in case it is not a repository itself, but embedded in an unrelated
-# repository.
-GIT_CEILING_DIRECTORIES="$SOURCE_DIR/.."
+# repository. The PARENT_PROJECT_DIR variable can be used to override this, for
+# example when git-gui is included as a subproject.
+if test -n "$PARENT_PROJECT_DIR"
+then
+	GIT_CEILING_DIRECTORIES="$PARENT_PROJECT_DIR/.."
+else
+	GIT_CEILING_DIRECTORIES="$SOURCE_DIR/.."
+fi
+
 export GIT_CEILING_DIRECTORIES
 
 tree_search ()

git-gui/Makefile

@@ -9,7 +9,7 @@ all::
 #
 
 GIT-VERSION-FILE: FORCE
-	@$(SHELL_PATH) ./GIT-VERSION-GEN . $@
+	@$(SHELL_PATH) ./GIT-VERSION-GEN . $@ "$(PARENT_PROJECT_DIR)"
 
 uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')
 uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not')
@@ -177,10 +177,13 @@ GIT-GUI-BUILD-OPTIONS: FORCE
 git-gui--askpass: git-gui--askpass.sh GIT-GUI-BUILD-OPTIONS generate-script.sh
 	$(QUIET_GEN)$(SHELL_PATH) generate-script.sh $@ $< ./GIT-GUI-BUILD-OPTIONS
 
+git-gui--askyesno: git-gui--askyesno.sh GIT-GUI-BUILD-OPTIONS generate-script.sh
+	$(QUIET_GEN)$(SHELL_PATH) generate-script.sh $@ $< ./GIT-GUI-BUILD-OPTIONS
+
 ifdef GITGUI_WINDOWS_WRAPPER
 all:: git-gui
 endif
-all:: $(GITGUI_MAIN) git-gui--askpass lib/tclIndex $(ALL_MSGFILES)
+all:: $(GITGUI_MAIN) git-gui--askpass git-gui--askyesno lib/tclIndex $(ALL_MSGFILES)
 
 install: all
 	$(QUIET)$(INSTALL_D0)'$(DESTDIR_SQ)$(gitexecdir_SQ)' $(INSTALL_D1)
@@ -221,7 +224,7 @@ dist-version: GIT-VERSION-FILE
 	@sed 's|^GITGUI_VERSION=||' <GIT-VERSION-FILE  >$(TARDIR)/version
 
 clean::
-	$(RM_RF) $(GITGUI_MAIN) git-gui--askpass lib/tclIndex po/*.msg $(PO_TEMPLATE)
+	$(RM_RF) $(GITGUI_MAIN) git-gui--askpass git-gui--askyesno lib/tclIndex po/*.msg $(PO_TEMPLATE)
 	$(RM_RF) GIT-VERSION-FILE GIT-GUI-BUILD-OPTIONS
 ifdef GITGUI_WINDOWS_WRAPPER
 	$(RM_RF) git-gui

git-gui/git-gui.sh

@@ -3900,6 +3900,24 @@ if {[winfo exists $ui_comm]} {
 
 	backup_commit_buffer
 
+	# Grey out comment lines (which are stripped from the final commit message by
+	# wash_commit_message).
+	$ui_comm tag configure commit_comment -foreground gray
+	proc dim_commit_comment_lines {} {
+		global ui_comm comment_string
+		$ui_comm tag remove commit_comment 1.0 end
+		set text [$ui_comm get 1.0 end]
+		# See also cmt_rx in wash_commit_message
+		set cmt_rx [strcat {^} [regsub -all {\W} $comment_string {\\&}]]
+		set ranges [regexp -all -indices -inline -line -- $cmt_rx $text]
+		foreach pair $ranges {
+			set idx "1.0 + [lindex $pair 0] chars"
+			$ui_comm tag add commit_comment $idx "$idx lineend + 1 char"
+		}
+	}
+	dim_commit_comment_lines
+	bind $ui_comm <<Modified>> { after idle dim_commit_comment_lines }
+
 	# -- If the user has aspell available we can drive it
 	#    in pipe mode to spellcheck the commit message.
 	#

git-gui/lib/diff.tcl

@@ -385,6 +385,8 @@ proc read_diff {fd conflict_size cont_info} {
 		#
 		if {[string match {@@@ *} $line]} {
 			set is_3way_diff 1
+			apply_tab_size 2
+		} elseif {[string match {@@ *} $line]} {
 			apply_tab_size 1
 		}
 

git-gui/meson.build

@@ -4,7 +4,7 @@ project('git-gui',
 
 fs = import('fs')
 
-shell = find_program('sh')
+shell = find_program('/bin/sh', 'sh')
 tclsh = find_program('tclsh')
 wish = find_program('wish')
 
@@ -34,6 +34,7 @@ version_file = custom_target(
     '@INPUT@',
     meson.current_source_dir(),
     '@OUTPUT@',
+    get_option('parent_project_dir'),
   ],
   build_always_stale: true,
 )
@@ -53,9 +54,10 @@ if target_machine.system() == 'windows'
   )
 endif
 
-custom_target(
-  output: 'git-gui--askpass',
-  input: 'git-gui--askpass.sh',
+foreach script : [ 'git-gui--askpass', 'git-gui--askyesno' ]
+  custom_target(
+    output: script,
+    input: script + '.sh',
     command: [
       shell,
       meson.current_source_dir() / 'generate-script.sh',
@@ -65,7 +67,8 @@ custom_target(
     ],
     install: true,
     install_dir: get_option('libexecdir') / 'git-core',
-)
+  )
+endforeach
 
 custom_target(
   input: 'git-gui.sh',

git-gui/meson_options.txt

@@ -0,0 +1,2 @@
+option('parent_project_dir', type: 'string', value: '',
+  description: 'The directory of the parent project. This is used so that the version can be determined even in case git-gui is included as a subtree.')