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6440d3417c
When using word diff, the code sets the word_regex from various defaults if it was not set already. The problem is that it does this on the original diff_options, which will also be used in subsequent diffs. This means that when the word_regex is not given on the command line, only the first diff for which a setting for word_regex (either from attributes or diff.wordRegex) ever takes effect. This value then propagates to the rest of the diff runs and in particular prevents further attribute lookups. Fix the problem of changing diff state once and for all, by working with a _copy_ of the diff_options. Noticed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
387 lines
8.1 KiB
Bash
Executable file
387 lines
8.1 KiB
Bash
Executable file
#!/bin/sh
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test_description='word diff colors'
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. ./test-lib.sh
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. "$TEST_DIRECTORY"/diff-lib.sh
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cat >pre.simple <<-\EOF
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h(4)
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a = b + c
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EOF
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cat >post.simple <<-\EOF
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h(4),hh[44]
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a = b + c
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aa = a
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aeff = aeff * ( aaa )
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EOF
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cat >expect.letter-runs-are-words <<-\EOF
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index 330b04f..5ed8eff 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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h(4),<GREEN>hh<RESET>[44]
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a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa<RESET> )
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EOF
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cat >expect.non-whitespace-is-word <<-\EOF
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index 330b04f..5ed8eff 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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h(4)<GREEN>,hh[44]<RESET>
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a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa )<RESET>
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EOF
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word_diff () {
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test_must_fail git diff --no-index "$@" pre post >output &&
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test_decode_color <output >output.decrypted &&
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test_cmp expect output.decrypted
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}
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test_language_driver () {
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lang=$1
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test_expect_success "diff driver '$lang'" '
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cp "$TEST_DIRECTORY/t4034/'"$lang"'/pre" \
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"$TEST_DIRECTORY/t4034/'"$lang"'/post" \
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"$TEST_DIRECTORY/t4034/'"$lang"'/expect" . &&
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echo "* diff='"$lang"'" >.gitattributes &&
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word_diff --color-words
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'
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}
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test_expect_success setup '
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git config diff.color.old red &&
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git config diff.color.new green &&
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git config diff.color.func magenta
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'
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test_expect_success 'set up pre and post with runs of whitespace' '
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cp pre.simple pre &&
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cp post.simple post
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'
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test_expect_success 'word diff with runs of whitespace' '
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cat >expect <<-\EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index 330b04f..5ed8eff 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
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a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa )<RESET>
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EOF
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word_diff --color-words &&
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word_diff --word-diff=color &&
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word_diff --color --word-diff=color
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'
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test_expect_success '--word-diff=porcelain' '
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sed 's/#.*$//' >expect <<-\EOF &&
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diff --git a/pre b/post
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index 330b04f..5ed8eff 100644
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--- a/pre
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+++ b/post
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@@ -1,3 +1,7 @@
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-h(4)
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+h(4),hh[44]
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~
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# significant space
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~
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a = b + c
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~
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~
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+aa = a
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~
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~
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+aeff = aeff * ( aaa )
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~
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EOF
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word_diff --word-diff=porcelain
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'
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test_expect_success '--word-diff=plain' '
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cat >expect <<-\EOF &&
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diff --git a/pre b/post
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index 330b04f..5ed8eff 100644
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--- a/pre
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+++ b/post
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@@ -1,3 +1,7 @@
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[-h(4)-]{+h(4),hh[44]+}
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a = b + c
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{+aa = a+}
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{+aeff = aeff * ( aaa )+}
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EOF
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word_diff --word-diff=plain &&
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word_diff --word-diff=plain --no-color
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'
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test_expect_success '--word-diff=plain --color' '
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cat >expect <<-\EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index 330b04f..5ed8eff 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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<RED>[-h(4)-]<RESET><GREEN>{+h(4),hh[44]+}<RESET>
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a = b + c<RESET>
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<GREEN>{+aa = a+}<RESET>
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<GREEN>{+aeff = aeff * ( aaa )+}<RESET>
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EOF
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word_diff --word-diff=plain --color
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'
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test_expect_success 'word diff without context' '
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cat >expect <<-\EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index 330b04f..5ed8eff 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1 +1 @@<RESET>
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<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
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<CYAN>@@ -3,0 +4,4 @@<RESET> <RESET><MAGENTA>a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa )<RESET>
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EOF
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word_diff --color-words --unified=0
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'
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test_expect_success 'word diff with a regular expression' '
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cp expect.letter-runs-are-words expect &&
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word_diff --color-words="[a-z]+"
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'
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test_expect_success 'set up a diff driver' '
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git config diff.testdriver.wordRegex "[^[:space:]]" &&
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cat <<-\EOF >.gitattributes
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pre diff=testdriver
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post diff=testdriver
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EOF
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'
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test_expect_success 'option overrides .gitattributes' '
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cp expect.letter-runs-are-words expect &&
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word_diff --color-words="[a-z]+"
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'
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test_expect_success 'use regex supplied by driver' '
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cp expect.non-whitespace-is-word expect &&
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word_diff --color-words
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'
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test_expect_success 'set up diff.wordRegex option' '
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git config diff.wordRegex "[[:alnum:]]+"
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'
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test_expect_success 'command-line overrides config' '
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cp expect.letter-runs-are-words expect &&
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word_diff --color-words="[a-z]+"
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'
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test_expect_success 'command-line overrides config: --word-diff-regex' '
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cat >expect <<-\EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index 330b04f..5ed8eff 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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h(4),<GREEN>{+hh+}<RESET>[44]
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a = b + c<RESET>
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<GREEN>{+aa = a+}<RESET>
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<GREEN>{+aeff = aeff * ( aaa+}<RESET> )
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EOF
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word_diff --color --word-diff-regex="[a-z]+"
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'
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test_expect_success '.gitattributes override config' '
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cp expect.non-whitespace-is-word expect &&
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word_diff --color-words
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'
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test_expect_success 'setup: remove diff driver regex' '
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test_might_fail git config --unset diff.testdriver.wordRegex
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'
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test_expect_success 'use configured regex' '
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cat >expect <<-\EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index 330b04f..5ed8eff 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1,3 +1,7 @@<RESET>
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h(4),<GREEN>hh[44<RESET>]
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a = b + c<RESET>
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<GREEN>aa = a<RESET>
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<GREEN>aeff = aeff * ( aaa<RESET> )
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EOF
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word_diff --color-words
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'
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test_expect_success 'test parsing words for newline' '
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echo "aaa (aaa)" >pre &&
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echo "aaa (aaa) aaa" >post &&
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cat >expect <<-\EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index c29453b..be22f37 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1 +1 @@<RESET>
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aaa (aaa) <GREEN>aaa<RESET>
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EOF
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word_diff --color-words="a+"
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'
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test_expect_success 'test when words are only removed at the end' '
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echo "(:" >pre &&
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echo "(" >post &&
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cat >expect <<-\EOF &&
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<BOLD>diff --git a/pre b/post<RESET>
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<BOLD>index 289cb9d..2d06f37 100644<RESET>
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<BOLD>--- a/pre<RESET>
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<BOLD>+++ b/post<RESET>
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<CYAN>@@ -1 +1 @@<RESET>
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(<RED>:<RESET>
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EOF
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word_diff --color-words=.
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'
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test_expect_success '--word-diff=none' '
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echo "(:" >pre &&
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echo "(" >post &&
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cat >expect <<-\EOF &&
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diff --git a/pre b/post
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index 289cb9d..2d06f37 100644
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--- a/pre
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+++ b/post
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@@ -1 +1 @@
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-(:
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+(
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EOF
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word_diff --word-diff=plain --word-diff=none
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'
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test_expect_success 'unset default driver' '
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test_unconfig diff.wordregex
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'
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test_language_driver bibtex
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test_language_driver cpp
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test_language_driver csharp
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test_language_driver fortran
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test_language_driver html
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test_language_driver java
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test_language_driver matlab
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test_language_driver objc
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test_language_driver pascal
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test_language_driver perl
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test_language_driver php
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test_language_driver python
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test_language_driver ruby
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test_language_driver tex
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test_expect_success 'word-diff with diff.sbe' '
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cat >expect <<-\EOF &&
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diff --git a/pre b/post
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index a1a53b5..bc8fe6d 100644
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--- a/pre
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+++ b/post
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@@ -1,3 +1,3 @@
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a
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[-b-]{+c+}
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EOF
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cat >pre <<-\EOF &&
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a
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b
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EOF
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cat >post <<-\EOF &&
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a
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c
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EOF
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test_when_finished "git config --unset diff.suppress-blank-empty" &&
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git config diff.suppress-blank-empty true &&
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word_diff --word-diff=plain
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'
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test_expect_success 'word-diff with no newline at EOF' '
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cat >expect <<-\EOF &&
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diff --git a/pre b/post
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index 7bf316e..3dd0303 100644
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--- a/pre
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+++ b/post
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@@ -1 +1 @@
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a a [-a-]{+ab+} a a
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EOF
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printf "%s" "a a a a a" >pre &&
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printf "%s" "a a ab a a" >post &&
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word_diff --word-diff=plain
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'
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test_expect_success 'setup history with two files' '
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echo "a b; c" >a.tex &&
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echo "a b; c" >z.txt &&
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git add a.tex z.txt &&
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git commit -minitial &&
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# modify both
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echo "a bx; c" >a.tex &&
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echo "a bx; c" >z.txt &&
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git commit -mmodified -a
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'
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test_expect_success 'wordRegex for the first file does not apply to the second' '
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echo "*.tex diff=tex" >.gitattributes &&
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git config diff.tex.wordRegex "[a-z]+|." &&
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cat >expect <<-\EOF &&
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diff --git a/a.tex b/a.tex
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--- a/a.tex
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+++ b/a.tex
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@@ -1 +1 @@
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a [-b-]{+bx+}; c
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diff --git a/z.txt b/z.txt
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--- a/z.txt
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+++ b/z.txt
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@@ -1 +1 @@
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a [-b;-]{+bx;+} c
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EOF
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git diff --word-diff HEAD~ >actual &&
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compare_diff_patch expect actual
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'
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test_done
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