patch 8.1.0360: using an external diff program is slow and inflexible
Problem: Using an external diff program is slow and inflexible.
Solution: Include the xdiff library. (Christian Brabandt, closes #2732)
Use it by default.
diff --git a/src/testdir/dumps/Test_diff_01.dump b/src/testdir/dumps/Test_diff_01.dump
new file mode 100644
index 0000000..0dbce1f
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_01.dump
@@ -0,0 +1,20 @@
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+|:+0&&> @73
diff --git a/src/testdir/dumps/Test_diff_02.dump b/src/testdir/dumps/Test_diff_02.dump
new file mode 100644
index 0000000..78f7978
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_02.dump
@@ -0,0 +1,20 @@
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diff --git a/src/testdir/dumps/Test_diff_03.dump b/src/testdir/dumps/Test_diff_03.dump
new file mode 100644
index 0000000..60916a8
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_03.dump
@@ -0,0 +1,20 @@
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diff --git a/src/testdir/dumps/Test_diff_04.dump b/src/testdir/dumps/Test_diff_04.dump
new file mode 100644
index 0000000..ba9cdd8
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_04.dump
@@ -0,0 +1,20 @@
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diff --git a/src/testdir/dumps/Test_diff_05.dump b/src/testdir/dumps/Test_diff_05.dump
new file mode 100644
index 0000000..7a5d540
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_05.dump
@@ -0,0 +1,20 @@
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diff --git a/src/testdir/dumps/Test_diff_06.dump b/src/testdir/dumps/Test_diff_06.dump
new file mode 100644
index 0000000..8cd68fd
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_06.dump
@@ -0,0 +1,20 @@
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diff --git a/src/testdir/dumps/Test_diff_07.dump b/src/testdir/dumps/Test_diff_07.dump
new file mode 100644
index 0000000..97864c6
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_07.dump
@@ -0,0 +1,20 @@
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diff --git a/src/testdir/dumps/Test_diff_08.dump b/src/testdir/dumps/Test_diff_08.dump
new file mode 100644
index 0000000..6445a57
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_08.dump
@@ -0,0 +1,20 @@
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diff --git a/src/testdir/dumps/Test_diff_09.dump b/src/testdir/dumps/Test_diff_09.dump
new file mode 100644
index 0000000..6445a57
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_09.dump
@@ -0,0 +1,20 @@
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diff --git a/src/testdir/dumps/Test_diff_10.dump b/src/testdir/dumps/Test_diff_10.dump
new file mode 100644
index 0000000..70b9c82
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_10.dump
@@ -0,0 +1,20 @@
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
index 0000000..74ad5b6
--- /dev/null
+++ b/src/testdir/dumps/Test_diff_16.dump
@@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1>i+0#0000000#ffffff0|n|t| |m|a|i|n|(|)| @24||+1&&| +0#0000e05#a8a8a8255@1|i+0#0000000#ffffff0|n|t| |m|a|i|n|(|)| @24
+| +0#0000e05#a8a8a8255@1|{+0#0000000#ffffff0| @33||+1&&| +0#0000e05#a8a8a8255@1|{+0#0000000#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|-+0#4040ff13#afffff255@34||+1#0000000#ffffff0| +0#0000e05#a8a8a8255@1| +0#0000000#5fd7ff255@2|i|f| |(|0|)| @25
+| +0#0000e05#a8a8a8255@1|-+0#4040ff13#afffff255@34||+1#0000000#ffffff0| +0#0000e05#a8a8a8255@1| +0#0000000#5fd7ff255@2|{| @30
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@2|p|r|i|n|t|f|(|"|H|e|l@1|o|,| |W|o|r|l|d|!|"|)|;| @7||+1&&| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@5|p|r|i|n|t|f|(|"|H|e|l@1|o|,| |W|o|r|l|d|!|"|)|;| @4
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@2|r|e|t|u|r|n| |0|;| @22||+1&&| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@5|r|e|t|u|r|n| |0|;| @19
+| +0#0000e05#a8a8a8255@1|-+0#4040ff13#afffff255@34||+1#0000000#ffffff0| +0#0000e05#a8a8a8255@1| +0#0000000#5fd7ff255@2|}| @30
+| +0#0000e05#a8a8a8255@1|}+0#0000000#ffffff0| @33||+1&&| +0#0000e05#a8a8a8255@1|}+0#0000000#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33||+1#0000000&| +0#0000e05#a8a8a8255@1|~+0#4040ff13#ffffff0| @33
+|X+3#0000000&|f|i|l|e|1| @12|1|,|1| @11|A|l@1| |X+1&&|f|i|l|e|2| @12|1|,|1| @11|A|l@1
+|:+0&&|s|e|t| |d|i|f@1|o|p|t|+|=|i|n|t|e|r|n|a|l| @52
diff --git a/src/testdir/test_diffmode.vim b/src/testdir/test_diffmode.vim
index d6c5c83..c3c1eaf 100644
--- a/src/testdir/test_diffmode.vim
+++ b/src/testdir/test_diffmode.vim
@@ -1,4 +1,6 @@
" Tests for diff mode
+source shared.vim
+source screendump.vim
func Test_diff_fold_sync()
enew!
@@ -33,6 +35,18 @@
endfunc
func Test_vert_split()
+ set diffopt=filler
+ call Common_vert_split()
+ set diffopt&
+endfunc
+
+func Test_vert_split_internal()
+ set diffopt=internal,filler
+ call Common_vert_split()
+ set diffopt&
+endfunc
+
+func Common_vert_split()
" Disable the title to avoid xterm keeping the wrong one.
set notitle noicon
new
@@ -275,10 +289,8 @@
bwipe!
endfunc
-func Test_diffopt_icase()
- set diffopt=icase,foldcolumn:0
-
- e one
+func Common_icase_test()
+ edit one
call setline(1, ['One', 'Two', 'Three', 'Four', 'Fi#ve'])
redraw
let normattr = screenattr(1, 1)
@@ -300,32 +312,54 @@
diffoff!
%bwipe!
+endfunc
+
+func Test_diffopt_icase()
+ set diffopt=icase,foldcolumn:0
+ call Common_icase_test()
set diffopt&
endfunc
-func Test_diffopt_iwhite()
- set diffopt=iwhite,foldcolumn:0
+func Test_diffopt_icase_internal()
+ set diffopt=icase,foldcolumn:0,internal
+ call Common_icase_test()
+ set diffopt&
+endfunc
- e one
- " Difference in trailing spaces should be ignored,
+func Common_iwhite_test()
+ edit one
+ " Difference in trailing spaces and amount of spaces should be ignored,
" but not other space differences.
- call setline(1, ["One \t", 'Two', 'Three', 'Four'])
+ call setline(1, ["One \t", 'Two', 'Three', 'one two', 'one two', 'Four'])
redraw
let normattr = screenattr(1, 1)
diffthis
botright vert new two
- call setline(1, ["One\t ", "Two\t ", 'Three', ' Four'])
+ call setline(1, ["One\t ", "Two\t ", 'Three', 'one two', 'onetwo', ' Four'])
diffthis
redraw
call assert_equal(normattr, screenattr(1, 1))
call assert_equal(normattr, screenattr(2, 1))
call assert_equal(normattr, screenattr(3, 1))
- call assert_notequal(normattr, screenattr(4, 1))
+ call assert_equal(normattr, screenattr(4, 1))
+ call assert_notequal(normattr, screenattr(5, 1))
+ call assert_notequal(normattr, screenattr(6, 1))
diffoff!
%bwipe!
+endfunc
+
+func Test_diffopt_iwhite()
+ set diffopt=iwhite,foldcolumn:0
+ call Common_iwhite_test()
+ set diffopt&
+endfunc
+
+func Test_diffopt_iwhite_internal()
+ set diffopt=internal,iwhite,foldcolumn:0
+ call Common_iwhite_test()
set diffopt&
endfunc
@@ -339,8 +373,13 @@
set diffopt=context:2
call assert_equal('+-- 2 lines: 1', foldtextresult(1))
+ set diffopt=internal,context:2
+ call assert_equal('+-- 2 lines: 1', foldtextresult(1))
+
set diffopt=context:1
call assert_equal('+-- 3 lines: 1', foldtextresult(1))
+ set diffopt=internal,context:1
+ call assert_equal('+-- 3 lines: 1', foldtextresult(1))
diffoff!
%bwipe!
@@ -348,7 +387,7 @@
endfunc
func Test_diffopt_horizontal()
- set diffopt=horizontal
+ set diffopt=internal,horizontal
diffsplit
call assert_equal(&columns, winwidth(1))
@@ -362,7 +401,7 @@
endfunc
func Test_diffopt_vertical()
- set diffopt=vertical
+ set diffopt=internal,vertical
diffsplit
call assert_equal(&lines - 2, winheight(1))
@@ -376,7 +415,7 @@
endfunc
func Test_diffopt_hiddenoff()
- set diffopt=filler,foldcolumn:0,hiddenoff
+ set diffopt=internal,filler,foldcolumn:0,hiddenoff
e! one
call setline(1, ['Two', 'Three'])
redraw
@@ -399,7 +438,7 @@
endfunc
func Test_diffoff_hidden()
- set diffopt=filler,foldcolumn:0
+ set diffopt=internal,filler,foldcolumn:0
e! one
call setline(1, ['Two', 'Three'])
redraw
@@ -629,3 +668,118 @@
bwipe!
bwipe!
endfunc
+
+func WriteDiffFiles(list1, list2)
+ call writefile(a:list1, 'Xfile1')
+ call writefile(a:list2, 'Xfile2')
+endfunc
+
+" Verify a screendump with both the external and external diff.
+func VerifyBoth(buf, dumpfile, extra)
+ call term_sendkeys(a:buf, ":diffupdate!\<cr>")
+ " trailing : for leaving the cursor on the command line
+ for cmd in [":set diffopt=filler" . a:extra . "\<cr>:", ":set diffopt+=internal\<cr>:"]
+ call term_sendkeys(a:buf, cmd)
+ if VerifyScreenDump(a:buf, a:dumpfile, {}, cmd =~ 'internal' ? 'internal' : 'external')
+ break " don't let the next iteration overwrite the "failed" file.
+ endif
+ endfor
+endfunc
+
+func Test_diff_screen()
+ if !CanRunVimInTerminal() || !has('menu')
+ return
+ endif
+ " clean up already existing swap files, just in case
+ call delete('.Xfile1.swp')
+ call delete('.Xfile2.swp')
+
+ " Test 1: Add a line in beginning of file 2
+ call WriteDiffFiles([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
+ let buf = RunVimInTerminal('-d Xfile1 Xfile2', {})
+ " Set autoread mode, ,so that Vim won't complain once we re-write the test
+ " files
+ call term_sendkeys(buf, ":set autoread\<cr>\<c-w>w:set autoread\<cr>\<c-w>w")
+
+ call VerifyBoth(buf, 'Test_diff_01', '')
+
+ " Test 2: Add a line in beginning of file 1
+ call WriteDiffFiles([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
+ call VerifyBoth(buf, 'Test_diff_02', '')
+
+ " Test 3: Add a line at the end of file 2
+ call WriteDiffFiles([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])
+ call VerifyBoth(buf, 'Test_diff_03', '')
+
+ " Test 4: Add a line at the end of file 1
+ call WriteDiffFiles([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
+ call VerifyBoth(buf, 'Test_diff_04', '')
+
+ " Test 5: Add a line in the middle of file 2, remove on at the end of file 1
+ call WriteDiffFiles([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], [1, 2, 3, 4, 4, 5, 6, 7, 8, 9, 10])
+ call VerifyBoth(buf, 'Test_diff_05', '')
+
+ " Test 6: Add a line in the middle of file 1, remove on at the end of file 2
+ call WriteDiffFiles([1, 2, 3, 4, 4, 5, 6, 7, 8, 9, 10], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])
+ call VerifyBoth(buf, 'Test_diff_06', '')
+
+ " Test 7 - 9: Test normal/patience/histogram diff algorithm
+ call WriteDiffFiles(['#include <stdio.h>', '', '// Frobs foo heartily', 'int frobnitz(int foo)', '{',
+ \ ' int i;', ' for(i = 0; i < 10; i++)', ' {', ' printf("Your answer is: ");',
+ \ ' printf("%d\n", foo);', ' }', '}', '', 'int fact(int n)', '{', ' if(n > 1)', ' {',
+ \ ' return fact(n-1) * n;', ' }', ' return 1;', '}', '', 'int main(int argc, char **argv)',
+ \ '{', ' frobnitz(fact(10));', '}'],
+ \ ['#include <stdio.h>', '', 'int fib(int n)', '{', ' if(n > 2)', ' {',
+ \ ' return fib(n-1) + fib(n-2);', ' }', ' return 1;', '}', '', '// Frobs foo heartily',
+ \ 'int frobnitz(int foo)', '{', ' int i;', ' for(i = 0; i < 10; i++)', ' {',
+ \ ' printf("%d\n", foo);', ' }', '}', '',
+ \ 'int main(int argc, char **argv)', '{', ' frobnitz(fib(10));', '}'])
+ call term_sendkeys(buf, ":diffupdate!\<cr>")
+ call term_sendkeys(buf, ":set diffopt+=internal\<cr>")
+ call VerifyScreenDump(buf, 'Test_diff_07', {})
+
+ call term_sendkeys(buf, ":set diffopt+=algorithm:patience\<cr>")
+ call VerifyScreenDump(buf, 'Test_diff_08', {})
+
+ call term_sendkeys(buf, ":set diffopt+=algorithm:histogram\<cr>")
+ call VerifyScreenDump(buf, 'Test_diff_09', {})
+
+ " Test 10-11: normal/indent-heuristic
+ call term_sendkeys(buf, ":set diffopt&vim\<cr>")
+ call WriteDiffFiles(['', ' def finalize(values)', '', ' values.each do |v|', ' v.finalize', ' end'],
+ \ ['', ' def finalize(values)', '', ' values.each do |v|', ' v.prepare', ' end', '',
+ \ ' values.each do |v|', ' v.finalize', ' end'])
+ call term_sendkeys(buf, ":diffupdate!\<cr>")
+ call term_sendkeys(buf, ":set diffopt+=internal\<cr>")
+ call VerifyScreenDump(buf, 'Test_diff_10', {})
+
+ call term_sendkeys(buf, ":set diffopt+=indent-heuristic\<cr>")
+ call VerifyScreenDump(buf, 'Test_diff_11', {})
+
+ " Test 12: diff the same file
+ call WriteDiffFiles([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
+ call VerifyBoth(buf, 'Test_diff_12', '')
+
+ " Test 13: diff an empty file
+ call WriteDiffFiles([], [])
+ call VerifyBoth(buf, 'Test_diff_13', '')
+
+ " Test 14: test diffopt+=icase
+ call WriteDiffFiles(['a', 'b', 'cd'], ['A', 'b', 'cDe'])
+ call VerifyBoth(buf, 'Test_diff_14', " diffopt+=filler diffopt+=icase")
+
+ " Test 15-16: test diffopt+=iwhite
+ call WriteDiffFiles(['int main()', '{', ' printf("Hello, World!");', ' return 0;', '}'],
+ \ ['int main()', '{', ' if (0)', ' {', ' printf("Hello, World!");', ' return 0;', ' }', '}'])
+ call term_sendkeys(buf, ":diffupdate!\<cr>")
+ call term_sendkeys(buf, ":set diffopt&vim diffopt+=filler diffopt+=iwhite\<cr>")
+ call VerifyScreenDump(buf, 'Test_diff_15', {})
+ call term_sendkeys(buf, ":set diffopt+=internal\<cr>")
+ call VerifyScreenDump(buf, 'Test_diff_16', {})
+
+ " clean up
+ call StopVimInTerminal(buf)
+ call delete('Xfile1')
+ call delete('Xfile2')
+endfunc
+