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0719f3eecd
CSS is widely used, motivating it being included as a built-in pattern.
It must be noted that the word_regex for CSS (i.e. the regex defining
what is a word in the language) does not consider '.' and '#' characters
(in CSS selectors) to be part of the word. This behavior is documented
by the test t/t4018/css-rule.
The logic behind this behavior is the following: identifiers in CSS
selectors are identifiers in a HTML/XML document. Therefore, the '.'/'#'
character are not part of the identifier, but an indicator of the nature
of the identifier in HTML/XML (class or id). Diffing ".class1" and
".class2" must show that the class name is changed, but we still are
selecting a class.
Logic behind the "pattern" regex is:
1. reject lines ending with a colon/semicolon (properties)
2. if a line begins with a name in column 1, pick the whole line
Credits to Johannes Sixt (j6t@kdbg.org) for the pattern regex and most
of the tests.
Signed-off-by: William Duclot <william.duclot@ensimag.grenoble-inp.fr>
Signed-off-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Reviewed-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
388 lines
8.1 KiB
Bash
Executable file
388 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_unconfig 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 ada
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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 css
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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_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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test_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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