[PATCH 1/2] git-gui: support for $FILENAMES in tool definitions

[Alex Riesen <alexander.riesen@cetitec.com>]

This addes a FILENAMES environment variable, which contains the repository
pathnames of all selected files the list.
The variable contains the names separated by LF (\n, \x0a).

If the file names contain LF characters, the tool command might be unable to
unambiguosly split the value of $FILENAME into the separate names.

Note that the file marked and diffed immediately after starting the GUI up,
is not actually selected. One must click on it once to really select it.

Signed-off-by: Alex Riesen <alexander.riesen@cetitec.com>
---
 lib/tools.tcl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/tools.tcl b/lib/tools.tcl
index 6ec9411..413f1a1 100644
--- a/lib/tools.tcl
+++ b/lib/tools.tcl
@@ -69,6 +69,7 @@ proc tools_populate_one {fullname} {
 proc tools_exec {fullname} {
 	global repo_config env current_diff_path
 	global current_branch is_detached
+	global selected_paths
 
 	if {[is_config_true "guitool.$fullname.needsfile"]} {
 		if {$current_diff_path eq {}} {
@@ -100,6 +101,7 @@ proc tools_exec {fullname} {
 
 	set env(GIT_GUITOOL) $fullname
 	set env(FILENAME) $current_diff_path
+	set env(FILENAMES) [join [array names selected_paths] \n]
 	if {$is_detached} {
 		set env(CUR_BRANCH) ""
 	} else {
@@ -121,6 +123,7 @@ proc tools_exec {fullname} {
 
 	unset env(GIT_GUITOOL)
 	unset env(FILENAME)
+	unset env(FILENAMES)
 	unset env(CUR_BRANCH)
 	catch { unset env(ARGS) }
 	catch { unset env(REVISION) }
-- 
2.9.0.45.g28c608e.dirty


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