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Merge branch 'jc/ws-error-highlight'

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"git diff/log --ws-error-highlight=<kind>" lacked the corresponding
configuration variable to set it by default.

* jc/ws-error-highlight:
  diff: introduce diff.wsErrorHighlight option
  diff.c: move ws-error-highlight parsing helpers up
  diff.c: refactor parse_ws_error_highlight()
  t4015: split out the "setup" part of ws-error-highlight test
This commit is contained in:
Junio C Hamano 2016-10-26 13:14:43 -07:00
commit e5272d304a
4 changed files with 119 additions and 52 deletions
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6
Documentation/diff-config.txt
View File

@ -193,3 +193,9 @@ diff.algorithm::
low-occurrence common elements".
--
+
diff.wsErrorHighlight::
A comma separated list of `old`, `new`, `context`, that
specifies how whitespace errors on lines are highlighted
with `color.diff.whitespace`. Can be overridden by the
command line option `--ws-error-highlight=<kind>`

2
Documentation/diff-options.txt
View File

@ -308,6 +308,8 @@ ifndef::git-format-patch[]
lines are highlighted. E.g. `--ws-error-highlight=new,old`
highlights whitespace errors on both deleted and added lines.
`all` can be used as a short-hand for `old,new,context`.
The `diff.wsErrorHighlight` configuration variable can be
used to specify the default behaviour.
endif::git-format-patch[]

89
diff.c
View File

@ -43,6 +43,7 @@ static int diff_stat_graph_width;
static int diff_dirstat_permille_default = 30;
static struct diff_options default_diff_options;
static long diff_algorithm;
static unsigned ws_error_highlight_default = WSEH_NEW;
static char diff_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
@ -172,6 +173,43 @@ long parse_algorithm_value(const char *value)
return -1;
}
static int parse_one_token(const char **arg, const char *token)
{
const char *rest;
if (skip_prefix(*arg, token, &rest) && (!*rest || *rest == ',')) {
*arg = rest;
return 1;
}
return 0;
}
static int parse_ws_error_highlight(const char *arg)
{
const char *orig_arg = arg;
unsigned val = 0;
while (*arg) {
if (parse_one_token(&arg, "none"))
val = 0;
else if (parse_one_token(&arg, "default"))
val = WSEH_NEW;
else if (parse_one_token(&arg, "all"))
val = WSEH_NEW | WSEH_OLD | WSEH_CONTEXT;
else if (parse_one_token(&arg, "new"))
val |= WSEH_NEW;
else if (parse_one_token(&arg, "old"))
val |= WSEH_OLD;
else if (parse_one_token(&arg, "context"))
val |= WSEH_CONTEXT;
else {
return -1 - (int)(arg - orig_arg);
}
if (*arg)
arg++;
}
return val;
}
/*
* These are to give UI layer defaults.
* The core-level commands such as git-diff-files should
@ -256,6 +294,15 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
if (git_diff_heuristic_config(var, value, cb) < 0)
return -1;
if (!strcmp(var, "diff.wserrorhighlight")) {
int val = parse_ws_error_highlight(value);
if (val < 0)
return -1;
ws_error_highlight_default = val;
return 0;
}
if (git_color_config(var, value, cb) < 0)
return -1;
@ -3307,7 +3354,7 @@ void diff_setup(struct diff_options *options)
options->rename_limit = -1;
options->dirstat_permille = diff_dirstat_permille_default;
options->context = diff_context_default;
options->ws_error_highlight = WSEH_NEW;
options->ws_error_highlight = ws_error_highlight_default;
DIFF_OPT_SET(options, RENAME_EMPTY);
/* pathchange left =NULL by default */
@ -3698,40 +3745,14 @@ static void enable_patch_output(int *fmt) {
*fmt |= DIFF_FORMAT_PATCH;
}
static int parse_one_token(const char **arg, const char *token)
static int parse_ws_error_highlight_opt(struct diff_options *opt, const char *arg)
{
const char *rest;
if (skip_prefix(*arg, token, &rest) && (!*rest || *rest == ',')) {
*arg = rest;
return 1;
}
return 0;
}
int val = parse_ws_error_highlight(arg);
static int parse_ws_error_highlight(struct diff_options *opt, const char *arg)
{
const char *orig_arg = arg;
unsigned val = 0;
while (*arg) {
if (parse_one_token(&arg, "none"))
val = 0;
else if (parse_one_token(&arg, "default"))
val = WSEH_NEW;
else if (parse_one_token(&arg, "all"))
val = WSEH_NEW | WSEH_OLD | WSEH_CONTEXT;
else if (parse_one_token(&arg, "new"))
val |= WSEH_NEW;
else if (parse_one_token(&arg, "old"))
val |= WSEH_OLD;
else if (parse_one_token(&arg, "context"))
val |= WSEH_CONTEXT;
else {
error("unknown value after ws-error-highlight=%.*s",
(int)(arg - orig_arg), orig_arg);
return 0;
}
if (*arg)
arg++;
if (val < 0) {
error("unknown value after ws-error-highlight=%.*s",
-1 - val, arg);
return 0;
}
opt->ws_error_highlight = val;
return 1;
@ -3950,7 +3971,7 @@ int diff_opt_parse(struct diff_options *options,
else if (skip_prefix(arg, "--submodule=", &arg))
return parse_submodule_opt(options, arg);
else if (skip_prefix(arg, "--ws-error-highlight=", &arg))
return parse_ws_error_highlight(options, arg);
return parse_ws_error_highlight_opt(options, arg);
/* misc options */
else if (!strcmp(arg, "-z"))

74
t/t4015-diff-whitespace.sh
View File

@ -869,7 +869,8 @@ test_expect_success 'diff that introduces and removes ws breakages' '
test_cmp expected current
'
test_expect_success 'the same with --ws-error-highlight' '
test_expect_success 'ws-error-highlight test setup' '
git reset --hard &&
{
echo "0. blank-at-eol " &&
@ -882,10 +883,7 @@ test_expect_success 'the same with --ws-error-highlight' '
echo "2. and a new line "
} >x &&
git -c color.diff=always diff --ws-error-highlight=default,old |
test_decode_color >current &&
cat >expected <<-\EOF &&
cat >expect.default-old <<-\EOF &&
<BOLD>diff --git a/x b/x<RESET>
<BOLD>index d0233a2..700886e 100644<RESET>
<BOLD>--- a/x<RESET>
@ -897,12 +895,7 @@ test_expect_success 'the same with --ws-error-highlight' '
<GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
EOF
test_cmp expected current &&
git -c color.diff=always diff --ws-error-highlight=all |
test_decode_color >current &&
cat >expected <<-\EOF &&
cat >expect.all <<-\EOF &&
<BOLD>diff --git a/x b/x<RESET>
<BOLD>index d0233a2..700886e 100644<RESET>
<BOLD>--- a/x<RESET>
@ -914,12 +907,7 @@ test_expect_success 'the same with --ws-error-highlight' '
<GREEN>+<RESET><GREEN>2. and a new line<RESET><BLUE> <RESET>
EOF
test_cmp expected current &&
git -c color.diff=always diff --ws-error-highlight=none |
test_decode_color >current &&
cat >expected <<-\EOF &&
cat >expect.none <<-\EOF
<BOLD>diff --git a/x b/x<RESET>
<BOLD>index d0233a2..700886e 100644<RESET>
<BOLD>--- a/x<RESET>
@ -931,7 +919,57 @@ test_expect_success 'the same with --ws-error-highlight' '
<GREEN>+2. and a new line <RESET>
EOF
test_cmp expected current
'
test_expect_success 'test --ws-error-highlight option' '
git -c color.diff=always diff --ws-error-highlight=default,old |
test_decode_color >current &&
test_cmp expect.default-old current &&
git -c color.diff=always diff --ws-error-highlight=all |
test_decode_color >current &&
test_cmp expect.all current &&
git -c color.diff=always diff --ws-error-highlight=none |
test_decode_color >current &&
test_cmp expect.none current
'
test_expect_success 'test diff.wsErrorHighlight config' '
git -c color.diff=always -c diff.wsErrorHighlight=default,old diff |
test_decode_color >current &&
test_cmp expect.default-old current &&
git -c color.diff=always -c diff.wsErrorHighlight=all diff |
test_decode_color >current &&
test_cmp expect.all current &&
git -c color.diff=always -c diff.wsErrorHighlight=none diff |
test_decode_color >current &&
test_cmp expect.none current
'
test_expect_success 'option overrides diff.wsErrorHighlight' '
git -c color.diff=always -c diff.wsErrorHighlight=none \
diff --ws-error-highlight=default,old |
test_decode_color >current &&
test_cmp expect.default-old current &&
git -c color.diff=always -c diff.wsErrorHighlight=default \
diff --ws-error-highlight=all |
test_decode_color >current &&
test_cmp expect.all current &&
git -c color.diff=always -c diff.wsErrorHighlight=all \
diff --ws-error-highlight=none |
test_decode_color >current &&
test_cmp expect.none current
'
test_done