[PATCH] git-gui: accommodate for intent-to-add files

["Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>]

From: Johannes Schindelin <johannes.schindelin@gmx.de>

As of Git v2.28.0, the diff for files staged via `git add -N` marks them
as new files. Git GUI was ill-prepared for that, and this patch teaches
Git GUI about them.

Please note that this will not even fix things with v2.28.0, as the
`rp/apply-cached-with-i-t-a` patches are required on Git's side, too.

This fixes https://github.com/git-for-windows/git/issues/2779

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
    git-gui: accommodate for intent-to-add files
    
    This fixes the intent-to-add bug reported in 
    https://github.com/git-for-windows/git/issues/2779: after a file was
    staged with git add -N, staging hunks/lines would fail silently.
    
    On its own, this patch is not enough, as it requires the patches
    provided in rp/apply-cached-with-i-t-a to be applied on Git's side.
    
    Please note that this patch might need a bit more help, as I do not
    really know whether showing "new file mode 100644" in the diff view is
    desirable, or whether we should somehow try to retain the
    "intent-to-add" state so that unstaging all hunks would return the file
    to "intent-to-add" state.
    
    Thoughts?

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-699%2Fdscho%2Fgit-gui-stage-ita-hunks-and-lines-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-699/dscho/git-gui-stage-ita-hunks-and-lines-v1
Pull-Request: https://github.com/gitgitgadget/git/pull/699

 git-gui.sh   |  2 ++
 lib/diff.tcl | 12 ++++++++----
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/git-gui.sh b/git-gui.sh
index 49bd86e635..e08cb17395 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -2080,6 +2080,7 @@ set all_icons(U$ui_index)   file_merge
 set all_icons(T$ui_index)   file_statechange
 
 set all_icons(_$ui_workdir) file_plain
+set all_icons(A$ui_workdir) file_plain
 set all_icons(M$ui_workdir) file_mod
 set all_icons(D$ui_workdir) file_question
 set all_icons(U$ui_workdir) file_merge
@@ -2106,6 +2107,7 @@ foreach i {
 		{A_ {mc "Staged for commit"}}
 		{AM {mc "Portions staged for commit"}}
 		{AD {mc "Staged for commit, missing"}}
+		{AA {mc "Intended to be added"}}
 
 		{_D {mc "Missing"}}
 		{D_ {mc "Staged for removal"}}
diff --git a/lib/diff.tcl b/lib/diff.tcl
index 871ad488c2..36d3715f7b 100644
--- a/lib/diff.tcl
+++ b/lib/diff.tcl
@@ -582,7 +582,8 @@ proc apply_or_revert_hunk {x y revert} {
 	if {$current_diff_side eq $ui_index} {
 		set failed_msg [mc "Failed to unstage selected hunk."]
 		lappend apply_cmd --reverse --cached
-		if {[string index $mi 0] ne {M}} {
+		set file_state [string index $mi 0]
+		if {$file_state ne {M} && $file_state ne {A}} {
 			unlock_index
 			return
 		}
@@ -595,7 +596,8 @@ proc apply_or_revert_hunk {x y revert} {
 			lappend apply_cmd --cached
 		}
 
-		if {[string index $mi 1] ne {M}} {
+		set file_state [string index $mi 1]
+		if {$file_state ne {M} && $file_state ne {A}} {
 			unlock_index
 			return
 		}
@@ -687,7 +689,8 @@ proc apply_or_revert_range_or_line {x y revert} {
 		set failed_msg [mc "Failed to unstage selected line."]
 		set to_context {+}
 		lappend apply_cmd --reverse --cached
-		if {[string index $mi 0] ne {M}} {
+		set file_state [string index $mi 0]
+		if {$file_state ne {M} && $file_state ne {A}} {
 			unlock_index
 			return
 		}
@@ -702,7 +705,8 @@ proc apply_or_revert_range_or_line {x y revert} {
 			lappend apply_cmd --cached
 		}
 
-		if {[string index $mi 1] ne {M}} {
+		set file_state [string index $mi 1]
+		if {$file_state ne {M} && $file_state ne {A}} {
 			unlock_index
 			return
 		}

base-commit: 469725c1a3d44f7e1475f1d37cd13e0824d4ea41
-- 
gitgitgadget