Retire support for old environment variables.

We have deprecated the old environment variable names for quite a
while and now it's time to remove them.  Gone are:

    SHA1_FILE_DIRECTORIES AUTHOR_DATE AUTHOR_EMAIL AUTHOR_NAME
    COMMIT_AUTHOR_EMAIL COMMIT_AUTHOR_NAME SHA1_FILE_DIRECTORY
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Makefile

@@ -124,7 +124,7 @@ DIFF_OBJS = \
 
 LIB_OBJS = \
 	blob.o commit.o connect.o count-delta.o csum-file.o \
-	date.o diff-delta.o entry.o gitenv.o ident.o index.o \
+	date.o diff-delta.o entry.o ident.o index.o \
 	object.o pack-check.o patch-delta.o path.o pkt-line.o \
 	quote.o read-cache.o refs.o rev-cache.o run-command.o \
 	server-info.o setup.o sha1_file.o sha1_name.o strbuf.o \

cache.h

@@ -53,17 +53,6 @@
  */
 #define DEFAULT_GIT_PORT 9418
 
-/*
- * Environment variables transition.
- * We accept older names for now but warn.
- */
-extern char *gitenv_bc(const char *);
-#ifdef __GNUC__
-#define gitenv(e) (getenv(e) ? : gitenv_bc(e))
-#else
-#define gitenv(e) (getenv(e) ? getenv(e) : gitenv_bc(e))
-#endif
-
 /*
  * Basic data structures for the directory cache
  */

diff.c

@@ -32,10 +32,10 @@ static const char *external_diff(void)
 	 *
 	 * GIT_DIFF_OPTS="-c";
 	 */
-	external_diff_cmd = gitenv("GIT_EXTERNAL_DIFF");
+	external_diff_cmd = getenv("GIT_EXTERNAL_DIFF");
 
 	/* In case external diff fails... */
-	env_diff_opts = gitenv("GIT_DIFF_OPTS");
+	env_diff_opts = getenv("GIT_DIFF_OPTS");
 	if (env_diff_opts) diff_opts = env_diff_opts;
 
 	done_preparing = 1;

fsck-objects.c

@@ -392,7 +392,7 @@ static int fsck_head_link(void)
 	static char path[PATH_MAX], link[PATH_MAX];
 	const char *git_dir;
 
-	git_dir = gitenv(GIT_DIR_ENVIRONMENT);
+	git_dir = getenv(GIT_DIR_ENVIRONMENT);
 	if (!git_dir) git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
 
 	snprintf(path, sizeof(path), "%s/HEAD", git_dir);

gitenv.c

-/*
- * Copyright (C) 2005 Junio C Hamano
- */
-#include "cache.h"
-
-/*
- * This array must be sorted by its canonical name, because
- * we do look-up by binary search.
- */
-static struct backward_compatible_env {
-	const char *canonical;
-	const char *old;
-} bc_name[] = {
-	{ "GIT_ALTERNATE_OBJECT_DIRECTORIES", "SHA1_FILE_DIRECTORIES" },
-	{ "GIT_AUTHOR_DATE", "AUTHOR_DATE" },
-	{ "GIT_AUTHOR_EMAIL", "AUTHOR_EMAIL" },
-	{ "GIT_AUTHOR_NAME", "AUTHOR_NAME" }, 
-	{ "GIT_COMMITTER_EMAIL", "COMMIT_AUTHOR_EMAIL" },
-	{ "GIT_COMMITTER_NAME", "COMMIT_AUTHOR_NAME" },
-	{ "GIT_OBJECT_DIRECTORY", "SHA1_FILE_DIRECTORY" },
-};
-
-static void warn_old_environment(int pos)
-{
-	int i;
-	static int warned = 0;
-	if (warned)
-		return;
-
-	warned = 1;
-	fprintf(stderr,
-		"warning: Attempting to use %s\n",
-		bc_name[pos].old);
-	fprintf(stderr,
-		"warning: GIT environment variables have been renamed.\n"
-		"warning: Please adjust your scripts and environment.\n");
-	for (i = 0; i < sizeof(bc_name) / sizeof(bc_name[0]); i++) {
-		/* warning is needed only when old name is there and
-		 * new name is not.
-		 */
-		if (!getenv(bc_name[i].canonical) && getenv(bc_name[i].old))
-			fprintf(stderr, "warning: old %s => new %s\n",
-				bc_name[i].old, bc_name[i].canonical);
-	}
-}
-
-char *gitenv_bc(const char *e)
-{
-	int first, last;
-	char *val = getenv(e);
-	if (val)
-		die("gitenv_bc called on existing %s; fix the caller.", e);
-
-	first = 0;
-	last = sizeof(bc_name) / sizeof(bc_name[0]);
-	while (last > first) {
-		int next = (last + first) >> 1;
-		int cmp = strcmp(e, bc_name[next].canonical);
-		if (!cmp) {
-			val = getenv(bc_name[next].old);
-			/* If the user has only old name, warn.
-			 * otherwise stay silent.
-			 */
-			if (val)
-				warn_old_environment(next);
-			return val;
-		}
-		if (cmp < 0) {
-			last = next;
-			continue;
-		}
-		first = next+1;
-	}
-	return NULL;
-}

http-fetch.c

@@ -355,7 +355,7 @@ int main(int argc, char **argv)
 
 	curl = curl_easy_init();
 
-	curl_ssl_verify = gitenv("GIT_SSL_NO_VERIFY") ? 0 : 1;
+	curl_ssl_verify = getenv("GIT_SSL_NO_VERIFY") ? 0 : 1;
 	curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, curl_ssl_verify);
 #if LIBCURL_VERSION_NUM >= 0x070907
 	curl_easy_setopt(curl, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);

ident.c

@@ -150,10 +150,10 @@ char *get_ident(const char *name, const char *email, const char *date_str)
 
 char *git_author_info(void)
 {
-	return get_ident(gitenv("GIT_AUTHOR_NAME"), gitenv("GIT_AUTHOR_EMAIL"), gitenv("GIT_AUTHOR_DATE"));
+	return get_ident(getenv("GIT_AUTHOR_NAME"), getenv("GIT_AUTHOR_EMAIL"), getenv("GIT_AUTHOR_DATE"));
 }
 
 char *git_committer_info(void)
 {
-	return get_ident(gitenv("GIT_COMMITTER_NAME"), gitenv("GIT_COMMITTER_EMAIL"), gitenv("GIT_COMMITTER_DATE"));
+	return get_ident(getenv("GIT_COMMITTER_NAME"), getenv("GIT_COMMITTER_EMAIL"), getenv("GIT_COMMITTER_DATE"));
 }

init-db.c

@@ -226,7 +226,7 @@ int main(int argc, char **argv)
 	/*
 	 * Set up the default .git directory contents
 	 */
-	git_dir = gitenv(GIT_DIR_ENVIRONMENT);
+	git_dir = getenv(GIT_DIR_ENVIRONMENT);
 	if (!git_dir) {
 		git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
 		fprintf(stderr, "defaulting to local storage area\n");

path.c

@@ -45,7 +45,7 @@ char *git_path(const char *fmt, ...)
 	va_list args;
 	unsigned len;
 
-	git_dir = gitenv(GIT_DIR_ENVIRONMENT);
+	git_dir = getenv(GIT_DIR_ENVIRONMENT);
 	if (!git_dir) git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
 	len = strlen(git_dir);
 	if (len > PATH_MAX-100)

setup.c

@@ -87,7 +87,7 @@ static int is_toplevel_directory(void)
 	return	!lstat(".git/HEAD", &st) &&
 		S_ISLNK(st.st_mode) &&
 		!access(".git/refs/", X_OK) &&
-		(gitenv(DB_ENVIRONMENT) || !access(".git/objects/", X_OK));
+		(getenv(DB_ENVIRONMENT) || !access(".git/objects/", X_OK));
 }
 
 const char *setup_git_directory(void)
@@ -99,7 +99,7 @@ const char *setup_git_directory(void)
 	 * If GIT_DIR is set explicitly, we're not going
 	 * to do any discovery
 	 */
-	if (gitenv(GIT_DIR_ENVIRONMENT))
+	if (getenv(GIT_DIR_ENVIRONMENT))
 		return NULL;
 
 	if (!getcwd(cwd, sizeof(cwd)) || cwd[0] != '/')

sha1_file.c

@@ -50,22 +50,22 @@ static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
 	*git_graft_file;
 static void setup_git_env(void)
 {
-	git_dir = gitenv(GIT_DIR_ENVIRONMENT);
+	git_dir = getenv(GIT_DIR_ENVIRONMENT);
 	if (!git_dir)
 		git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
-	git_object_dir = gitenv(DB_ENVIRONMENT);
+	git_object_dir = getenv(DB_ENVIRONMENT);
 	if (!git_object_dir) {
 		git_object_dir = xmalloc(strlen(git_dir) + 9);
 		sprintf(git_object_dir, "%s/objects", git_dir);
 	}
 	git_refs_dir = xmalloc(strlen(git_dir) + 6);
 	sprintf(git_refs_dir, "%s/refs", git_dir);
-	git_index_file = gitenv(INDEX_ENVIRONMENT);
+	git_index_file = getenv(INDEX_ENVIRONMENT);
 	if (!git_index_file) {
 		git_index_file = xmalloc(strlen(git_dir) + 7);
 		sprintf(git_index_file, "%s/index", git_dir);
 	}
-	git_graft_file = gitenv(GRAFT_ENVIRONMENT);
+	git_graft_file = getenv(GRAFT_ENVIRONMENT);
 	if (!git_graft_file)
 		git_graft_file = strdup(git_path("info/grafts"));
 }
@@ -285,7 +285,7 @@ void prepare_alt_odb(void)
 	struct stat st;
 	char *alt;
 
-	alt = gitenv(ALTERNATE_DB_ENVIRONMENT);
+	alt = getenv(ALTERNATE_DB_ENVIRONMENT);
 	if (!alt) alt = "";
 
 	sprintf(path, "%s/info/alternates", get_object_directory());

t/t0100-environment-names.sh

-#!/bin/sh
-#
-# Copyright (c) 2005 Junio C Hamano
-#
-
-test_description='general environment name warning test.
-
-This test makes sure that use of deprecated environment variables
-trigger the warnings from gitenv().'
-
-env_vars='GIT_AUTHOR_DATE:AUTHOR_DATE
-GIT_AUTHOR_EMAIL:AUTHOR_EMAIL
-GIT_AUTHOR_NAME:AUTHOR_NAME
-GIT_COMMITTER_EMAIL:COMMIT_AUTHOR_EMAIL
-GIT_COMMITTER_NAME:COMMIT_AUTHOR_NAME
-GIT_ALTERNATE_OBJECT_DIRECTORIES:SHA1_FILE_DIRECTORIES
-GIT_OBJECT_DIRECTORY:SHA1_FILE_DIRECTORY
-'
-
-. ./test-lib.sh
-
-export_them () {
-	for ev in $env_vars
-	do
-		new=$(expr "$ev" : '\(.*\):')
-		old=$(expr "$ev" : '.*:\(.*\)')
-		# Build and eval the following:
-		# case "${VAR+set}" in set) export VAR;; esac
-		evstr='case "${'$new'+set}" in set) export '$new';; esac'
-		eval "$evstr"
-		evstr='case "${'$old'+set}" in set) export '$old';; esac'
-		eval "$evstr"
-	done
-}
-
-date >path0
-git-update-index --add path0
-tree=$(git-write-tree)
-
-AUTHOR_DATE='Wed May 11 23:55:18 2005'
-AUTHOR_EMAIL='author@example.xz'
-AUTHOR_NAME='A U Thor'
-COMMIT_AUTHOR_EMAIL='author@example.xz'
-COMMIT_AUTHOR_NAME='A U Thor'
-SHA1_FILE_DIRECTORY=.git/objects
-
-export_them
-
-echo 'foo' | git-commit-tree $tree >/dev/null 2>errmsg
-cat >expected-err <<\EOF
-warning: Attempting to use SHA1_FILE_DIRECTORY
-warning: GIT environment variables have been renamed.
-warning: Please adjust your scripts and environment.
-warning: old AUTHOR_DATE => new GIT_AUTHOR_DATE
-warning: old AUTHOR_EMAIL => new GIT_AUTHOR_EMAIL
-warning: old AUTHOR_NAME => new GIT_AUTHOR_NAME
-warning: old COMMIT_AUTHOR_EMAIL => new GIT_COMMITTER_EMAIL
-warning: old COMMIT_AUTHOR_NAME => new GIT_COMMITTER_NAME
-warning: old SHA1_FILE_DIRECTORY => new GIT_OBJECT_DIRECTORY
-EOF
-sed -ne '/^warning: /p' <errmsg >generated-err
-
-test_expect_success \
-    'using old names should issue warnings.' \
-    'cmp generated-err expected-err'
-
-for ev in $env_vars
-do
-	new=$(expr "$ev" : '\(.*\):')
-	old=$(expr "$ev" : '.*:\(.*\)')
-	# Build and eval the following:
-	# NEWENV=$OLDENV
-	evstr="$new=\$$old"
-	eval "$evstr"
-done
-export_them
-echo 'foo' | git-commit-tree $tree >/dev/null 2>errmsg
-sed -ne '/^warning: /p' <errmsg >generated-err
-
-test_expect_success \
-    'using old names but having new names should not issue warnings.' \
-    'cmp generated-err /dev/null'
-
-test_done

t/t0110-environment-names-old.sh

-#!/bin/sh
-#
-# Copyright (c) 2005 Junio C Hamano
-#
-
-test_description='Using new and old environment names.
-
-This test makes sure that use of deprecated environment variables
-still works, using both new and old names makes new one take precedence,
-and GIT_DIR and GIT_ALTERNATE_OBJECT_DIRECTORIES mechanism works.'
-
-env_vars='GIT_AUTHOR_DATE:AUTHOR_DATE
-GIT_AUTHOR_EMAIL:AUTHOR_EMAIL
-GIT_AUTHOR_NAME:AUTHOR_NAME
-GIT_COMMITTER_EMAIL:COMMIT_AUTHOR_EMAIL
-GIT_COMMITTER_NAME:COMMIT_AUTHOR_NAME
-GIT_ALTERNATE_OBJECT_DIRECTORIES:SHA1_FILE_DIRECTORIES
-GIT_OBJECT_DIRECTORY:SHA1_FILE_DIRECTORY
-'
-
-. ./test-lib.sh
-
-export_them () {
-	for ev in $env_vars
-	do
-		new=$(expr "$ev" : '\(.*\):')
-		old=$(expr "$ev" : '.*:\(.*\)')
-		# Build and eval the following:
-		# case "${VAR+set}" in set) export VAR;; esac
-		evstr='case "${'$new'+set}" in set) export '$new';; esac'
-		eval "$evstr"
-		evstr='case "${'$old'+set}" in set) export '$old';; esac'
-		eval "$evstr"
-	done
-}
-
-SHA1_FILE_DIRECTORY=.svn/objects ;# whoa
-export SHA1_FILE_DIRECTORY
-
-rm -fr .git
-mkdir .svn
-test_expect_success \
-    'using SHA1_FILE_DIRECTORY in git-init-db' \
-    'git-init-db && test -d .svn/objects/cb'
-
-unset SHA1_FILE_DIRECTORY
-GIT_DIR=.svn
-export GIT_DIR
-rm -fr .git .svn
-mkdir .svn
-test_expect_success \
-    'using GIT_DIR in git-init-db' \
-    'git-init-db && test -d .svn/objects/cb'
-
-date >path0
-test_expect_success \
-    'using GIT_DIR in git-update-index' \
-    'git-update-index --add path0 && test -f .svn/index'
-
-sedScript='s|\(..\)|.svn/objects/\1/|'
-
-test_expect_success \
-    'using GIT_DIR in git-write-tree' \
-    'tree=$(git-write-tree) &&
-     test -f $(echo "$tree" | sed -e "$sedScript")'
-
-AUTHOR_DATE='Sat May 14 00:00:00 2005 -0000'
-AUTHOR_EMAIL='author@example.xz'
-AUTHOR_NAME='A U Thor'
-COMMIT_AUTHOR_EMAIL='author@example.xz'
-COMMIT_AUTHOR_NAME='A U Thor'
-export_them
-
-test_expect_success \
-    'using GIT_DIR and old variable names in git-commit-tree' \
-    'commit=$(echo foo | git-commit-tree $tree) &&
-     test -f $(echo "$commit" | sed -e "$sedScript")'
-
-test_expect_success \
-    'using GIT_DIR in git-cat-file' \
-    'git-cat-file commit $commit >current'
-
-cat >expected <<\EOF
-author A U Thor <author@example.xz>
-committer A U Thor <author@example.xz>
-EOF
-test_expect_success \
-    'verify old AUTHOR variables were used correctly in commit' \
-    'sed -ne '\''/^\(author\)/s|>.*|>|p'\'' -e'\''/^\(committer\)/s|>.*|>|p'\''\    current > out && cmp out expected'
-
-unset GIT_DIR
-test_expect_success \
-    'git-init-db without GIT_DIR' \
-    'git-init-db && test -d .git && test -d .git/objects/ef'
-
-SHA1_FILE_DIRECTORIES=.svn/objects
-export SHA1_FILE_DIRECTORIES
-
-test_expect_success \
-    'using SHA1_FILE_DIRECTORIES with git-ls-tree' \
-    'git-ls-tree $commit && git-ls-tree $tree'
-
-GIT_AUTHOR_DATE='Sat May 14 12:00:00 2005 -0000'
-GIT_AUTHOR_EMAIL='rohtua@example.xz'
-GIT_AUTHOR_NAME='R O Htua'
-GIT_COMMITTER_EMAIL='rohtua@example.xz'
-GIT_COMMITTER_NAME='R O Htua'
-export_them
-
-sedScript='s|\(..\)|.git/objects/\1/|'
-test_expect_success \
-    'using new author variables with git-commit-tree' \
-    'commit2=$(echo foo | git-commit-tree $tree) &&
-     test -f $(echo "$commit2" | sed -e "$sedScript")'
-
-GIT_ALTERNATE_OBJECT_DIRECTORIES=.git/objects
-GIT_DIR=nowhere
-export GIT_DIR GIT_ALTERNATE_OBJECT_DIRECTORIES
-
-test_expect_success \
-    'git-cat-file with GIT_DIR and GIT_ALTERNATE_OBJECT_DIRECTORIES' \
-    'git-cat-file commit $commit2 >current'
-
-cat >expected <<\EOF
-author R O Htua <rohtua@example.xz>
-committer R O Htua <rohtua@example.xz>
-EOF
-test_expect_success \
-    'verify new AUTHOR variables were used correctly in commit.' \
-    'sed -ne '\''/^\(author\)/s|>.*|>|p'\'' -e'\''/^\(committer\)/s|>.*|>|p'\''\    current > out && cmp out expected'
-
-test_done