[PATCH v8 3/4] mergetool: Break setup_tool out into separate initialization function

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The tool-specific functions are sometimes needed in scope earlier than
when run_merge_tool is called.

Signed-off-by: Seth House <seth@xxxxxxxxx>
---
 Documentation/git-mergetool--lib.txt | 4 ++++
 git-difftool--helper.sh              | 2 ++
 git-mergetool--lib.sh                | 7 ++++---
 git-mergetool.sh                     | 2 ++
 4 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/Documentation/git-mergetool--lib.txt b/Documentation/git-mergetool--lib.txt
index 4da9d24096..3e8f59ac0e 100644
--- a/Documentation/git-mergetool--lib.txt
+++ b/Documentation/git-mergetool--lib.txt
@@ -38,6 +38,10 @@ get_merge_tool_cmd::
 get_merge_tool_path::
 	returns the custom path for a merge tool.
 
+initialize_merge_tool::
+	bring merge tool specific functions into scope so they can be used or
+	overridden.
+
 run_merge_tool::
 	launches a merge tool given the tool name and a true/false
 	flag to indicate whether a merge base is present.
diff --git a/git-difftool--helper.sh b/git-difftool--helper.sh
index 46af3e60b7..c47a6d4253 100755
--- a/git-difftool--helper.sh
+++ b/git-difftool--helper.sh
@@ -61,6 +61,7 @@ launch_merge_tool () {
 		export BASE
 		eval $GIT_DIFFTOOL_EXTCMD '"$LOCAL"' '"$REMOTE"'
 	else
+		initialize_merge_tool "$merge_tool"
 		run_merge_tool "$merge_tool"
 	fi
 }
@@ -79,6 +80,7 @@ if test -n "$GIT_DIFFTOOL_DIRDIFF"
 then
 	LOCAL="$1"
 	REMOTE="$2"
+	initialize_merge_tool "$merge_tool"
 	run_merge_tool "$merge_tool" false
 else
 	# Launch the merge tool on each path provided by 'git diff'
diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index 7225abd811..e059b3559e 100644
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -248,6 +248,10 @@ trust_exit_code () {
 	fi
 }
 
+initialize_merge_tool () {
+	# Bring tool-specific functions into scope
+	setup_tool "$1" || return 1
+}
 
 # Entry point for running tools
 run_merge_tool () {
@@ -259,9 +263,6 @@ run_merge_tool () {
 	merge_tool_path=$(get_merge_tool_path "$1") || exit
 	base_present="$2"
 
-	# Bring tool-specific functions into scope
-	setup_tool "$1" || return 1
-
 	if merge_mode
 	then
 		run_merge_cmd "$1"
diff --git a/git-mergetool.sh b/git-mergetool.sh
index e3c7d78d1d..929192d0f8 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -334,6 +334,8 @@ merge_file () {
 	checkout_staged_file 2 "$MERGED" "$LOCAL"
 	checkout_staged_file 3 "$MERGED" "$REMOTE"
 
+	initialize_merge_tool "$merge_tool"
+
 	if test "$(
 		git config --get --bool "mergetool.$merge_tool.automerge" ||
 		git config --get --bool "mergetool.automerge" ||
-- 
2.29.2





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