882749a04f
This teaches the --color-words engine a more general interface that
supports two new modes:
* --word-diff=plain, inspired by the 'wdiff' utility (most similar to
'wdiff -n <old> <new>'): uses delimiters [-removed-] and {+added+}
* --word-diff=porcelain, which generates an ad-hoc machine readable
format:
- each diff unit is prefixed by [-+ ] and terminated by newline as
in unified diff
- newlines in the input are output as a line consisting only of a
tilde '~'
Both of these formats still support color if it is enabled, using it
to highlight the differences. --color-words becomes a synonym for
--word-diff=color, which is the color-only format. Also adds some
compatibility/convenience options.
Thanks to Junio C Hamano and Miles Bader for good ideas.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
335 lines
5.7 KiB
Bash
Executable File
335 lines
5.7 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_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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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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cat > pre <<\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 <<\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 <<\EOF
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<WHITE>diff --git a/pre b/post<RESET>
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<WHITE>index 330b04f..5ed8eff 100644<RESET>
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<WHITE>--- a/pre<RESET>
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<WHITE>+++ 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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test_expect_success 'word diff with runs of whitespace' '
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word_diff --color-words
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'
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test_expect_success '--word-diff=color' '
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word_diff --word-diff=color
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'
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test_expect_success '--color --word-diff=color' '
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word_diff --color --word-diff=color
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'
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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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test_expect_success '--word-diff=porcelain' '
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word_diff --word-diff=porcelain
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'
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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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test_expect_success '--word-diff=plain' '
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word_diff --word-diff=plain
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'
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test_expect_success '--word-diff=plain --no-color' '
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word_diff --word-diff=plain --no-color
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'
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cat > expect <<EOF
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<WHITE>diff --git a/pre b/post<RESET>
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<WHITE>index 330b04f..5ed8eff 100644<RESET>
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<WHITE>--- a/pre<RESET>
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<WHITE>+++ 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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test_expect_success '--word-diff=plain --color' '
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word_diff --word-diff=plain --color
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'
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cat > expect <<\EOF
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<WHITE>diff --git a/pre b/post<RESET>
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<WHITE>index 330b04f..5ed8eff 100644<RESET>
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<WHITE>--- a/pre<RESET>
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<WHITE>+++ 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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test_expect_success 'word diff without context' '
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word_diff --color-words --unified=0
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'
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cat > expect <<\EOF
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<WHITE>diff --git a/pre b/post<RESET>
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<WHITE>index 330b04f..5ed8eff 100644<RESET>
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<WHITE>--- a/pre<RESET>
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<WHITE>+++ 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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cp expect expect.letter-runs-are-words
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test_expect_success 'word diff with a regular expression' '
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word_diff --color-words="[a-z]+"
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'
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test_expect_success 'set 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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word_diff --color-words="[a-z]+"
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'
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cat > expect <<\EOF
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<WHITE>diff --git a/pre b/post<RESET>
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<WHITE>index 330b04f..5ed8eff 100644<RESET>
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<WHITE>--- a/pre<RESET>
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<WHITE>+++ 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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cp expect expect.non-whitespace-is-word
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test_expect_success 'use regex supplied by driver' '
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word_diff --color-words
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'
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test_expect_success 'set diff.wordRegex option' '
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git config diff.wordRegex "[[:alnum:]]+"
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'
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cp expect.letter-runs-are-words expect
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test_expect_success 'command-line overrides config' '
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word_diff --color-words="[a-z]+"
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'
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cat > expect <<\EOF
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<WHITE>diff --git a/pre b/post<RESET>
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<WHITE>index 330b04f..5ed8eff 100644<RESET>
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<WHITE>--- a/pre<RESET>
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<WHITE>+++ 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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test_expect_success 'command-line overrides config: --word-diff-regex' '
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word_diff --color --word-diff-regex="[a-z]+"
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'
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cp expect.non-whitespace-is-word expect
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test_expect_success '.gitattributes override config' '
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word_diff --color-words
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'
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test_expect_success 'remove diff driver regex' '
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git config --unset diff.testdriver.wordRegex
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'
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cat > expect <<\EOF
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<WHITE>diff --git a/pre b/post<RESET>
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<WHITE>index 330b04f..5ed8eff 100644<RESET>
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<WHITE>--- a/pre<RESET>
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<WHITE>+++ 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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test_expect_success 'use configured regex' '
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word_diff --color-words
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'
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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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<WHITE>diff --git a/pre b/post<RESET>
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<WHITE>index c29453b..be22f37 100644<RESET>
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<WHITE>--- a/pre<RESET>
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<WHITE>+++ 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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test_expect_success 'test parsing words for newline' '
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word_diff --color-words="a+"
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'
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echo '(:' > pre
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echo '(' > post
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cat > expect <<\EOF
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<WHITE>diff --git a/pre b/post<RESET>
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<WHITE>index 289cb9d..2d06f37 100644<RESET>
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<WHITE>--- a/pre<RESET>
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<WHITE>+++ 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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test_expect_success 'test when words are only removed at the end' '
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word_diff --color-words=.
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'
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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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test_expect_success '--word-diff=none' '
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word_diff --word-diff=plain --word-diff=none
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'
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test_done
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