diff options
| -rw-r--r-- | Documentation/diff-options.txt | 4 | ||||
| -rwxr-xr-x | contrib/completion/git-completion.bash | 2 | ||||
| -rw-r--r-- | diff.c | 4 | ||||
| -rw-r--r-- | diff.h | 1 | ||||
| -rwxr-xr-x | t/t4032-diff-inter-hunk-context.sh | 92 | ||||
| -rw-r--r-- | xdiff/xdiff.h | 1 | ||||
| -rw-r--r-- | xdiff/xemit.c | 3 |
7 files changed, 106 insertions, 1 deletions
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt index b432d2518..671f533ca 100644 --- a/Documentation/diff-options.txt +++ b/Documentation/diff-options.txt @@ -205,6 +205,10 @@ endif::git-format-patch[] differences even if one line has whitespace where the other line has none. +--inter-hunk-context=<lines>:: + Show the context between diff hunks, up to the specified number + of lines, thereby fusing hunks that are close to each other. + --exit-code:: Make the program exit with codes similar to diff(1). That is, it exits with 1 if there were differences and diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash index 3b25d4809..8ec782dc5 100755 --- a/contrib/completion/git-completion.bash +++ b/contrib/completion/git-completion.bash @@ -776,6 +776,7 @@ _git_diff () --no-ext-diff --no-prefix --src-prefix= --dst-prefix= --base --ours --theirs + --inter-hunk-context= " return ;; @@ -967,6 +968,7 @@ _git_log () --color-words --walk-reflogs --parents --children --full-history --merge + --inter-hunk-context= " return ;; @@ -1469,6 +1469,7 @@ static void builtin_diff(const char *name_a, ecbdata.file = o->file; xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts; xecfg.ctxlen = o->context; + xecfg.interhunkctxlen = o->interhunkcontext; xecfg.flags = XDL_EMIT_FUNCNAMES; if (pe) xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags); @@ -2538,6 +2539,9 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) options->b_prefix = arg + 13; else if (!strcmp(arg, "--no-prefix")) options->a_prefix = options->b_prefix = ""; + else if (opt_arg(arg, '\0', "inter-hunk-context", + &options->interhunkcontext)) + ; else if (!prefixcmp(arg, "--output=")) { options->file = fopen(arg + strlen("--output="), "w"); options->close_file = 1; @@ -78,6 +78,7 @@ struct diff_options { const char *a_prefix, *b_prefix; unsigned flags; int context; + int interhunkcontext; int break_opt; int detect_rename; int skip_stat_unmatch; diff --git a/t/t4032-diff-inter-hunk-context.sh b/t/t4032-diff-inter-hunk-context.sh new file mode 100755 index 000000000..e4e3e28fc --- /dev/null +++ b/t/t4032-diff-inter-hunk-context.sh @@ -0,0 +1,92 @@ +#!/bin/sh + +test_description='diff hunk fusing' + +. ./test-lib.sh + +f() { + echo $1 + i=1 + while test $i -le $2 + do + echo $i + i=$(expr $i + 1) + done + echo $3 +} + +t() { + case $# in + 4) hunks=$4; cmd="diff -U$3";; + 5) hunks=$5; cmd="diff -U$3 --inter-hunk-context=$4";; + esac + label="$cmd, $1 common $2" + file=f$1 + expected=expected.$file.$3.$hunks + + if ! test -f $file + then + f A $1 B >$file + git add $file + git commit -q -m. $file + f X $1 Y >$file + fi + + test_expect_success "$label: count hunks ($hunks)" " + test $(git $cmd $file | grep '^@@ ' | wc -l) = $hunks + " + + test -f $expected && + test_expect_success "$label: check output" " + git $cmd $file | grep -v '^index ' >actual && + test_cmp $expected actual + " +} + +cat <<EOF >expected.f1.0.1 || exit 1 +diff --git a/f1 b/f1 +--- a/f1 ++++ b/f1 +@@ -1,3 +1,3 @@ +-A ++X + 1 +-B ++Y +EOF + +cat <<EOF >expected.f1.0.2 || exit 1 +diff --git a/f1 b/f1 +--- a/f1 ++++ b/f1 +@@ -1 +1 @@ +-A ++X +@@ -3 +3 @@ A +-B ++Y +EOF + +# common lines ctx intrctx hunks +t 1 line 0 2 +t 1 line 0 0 2 +t 1 line 0 1 1 +t 1 line 0 2 1 +t 1 line 1 1 + +t 2 lines 0 2 +t 2 lines 0 0 2 +t 2 lines 0 1 2 +t 2 lines 0 2 1 +t 2 lines 1 1 + +t 3 lines 1 2 +t 3 lines 1 0 2 +t 3 lines 1 1 1 +t 3 lines 1 2 1 + +t 9 lines 3 2 +t 9 lines 3 2 2 +t 9 lines 3 3 1 + +test_done diff --git a/xdiff/xdiff.h b/xdiff/xdiff.h index 84fff583e..361f80231 100644 --- a/xdiff/xdiff.h +++ b/xdiff/xdiff.h @@ -84,6 +84,7 @@ typedef long (*find_func_t)(const char *line, long line_len, char *buffer, long typedef struct s_xdemitconf { long ctxlen; + long interhunkctxlen; unsigned long flags; find_func_t find_func; void *find_func_priv; diff --git a/xdiff/xemit.c b/xdiff/xemit.c index 4625c1b42..05bfa41f1 100644 --- a/xdiff/xemit.c +++ b/xdiff/xemit.c @@ -59,9 +59,10 @@ static int xdl_emit_record(xdfile_t *xdf, long ri, char const *pre, xdemitcb_t * */ xdchange_t *xdl_get_hunk(xdchange_t *xscr, xdemitconf_t const *xecfg) { xdchange_t *xch, *xchp; + long max_common = 2 * xecfg->ctxlen + xecfg->interhunkctxlen; for (xchp = xscr, xch = xscr->next; xch; xchp = xch, xch = xch->next) - if (xch->i1 - (xchp->i1 + xchp->chg1) > 2 * xecfg->ctxlen) + if (xch->i1 - (xchp->i1 + xchp->chg1) > max_common) break; return xchp; |