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#include "cache.h"
#include "strbuf.h"
#include "run-command.h"
#include "sigchain.h"
#define DEFAULT_EDITOR "vi"
const char *git_editor(void)
const char *editor = getenv("GIT_EDITOR");
const char *terminal = getenv("TERM");
int terminal_is_dumb = !terminal || !strcmp(terminal, "dumb");
if (!editor && editor_program)
editor = editor_program;
if (!editor && !terminal_is_dumb)
editor = getenv("VISUAL");
if (!editor)
editor = getenv("EDITOR");
if (!editor && terminal_is_dumb)
return NULL;
if (!editor)
return editor;
int launch_editor(const char *path, struct strbuf *buffer, const char *const *env)
const char *editor = git_editor();
if (!editor)
return error("Terminal is dumb, but EDITOR unset");
if (strcmp(editor, ":")) {
const char *args[] = { editor, path, NULL };
struct child_process p;
int ret, sig;
memset(&p, 0, sizeof(p));
p.argv = args;
p.env = env;
p.use_shell = 1;
if (start_command(&p) < 0)
return error("unable to start editor '%s'", editor);
sigchain_push(SIGINT, SIG_IGN);
sigchain_push(SIGQUIT, SIG_IGN);
ret = finish_command(&p);
sig = ret - 128;
if (sig == SIGINT || sig == SIGQUIT)
if (ret)
return error("There was a problem with the editor '%s'.",
if (!buffer)
return 0;
if (strbuf_read_file(buffer, path, 0) < 0)
return error("could not read file '%s': %s",
path, strerror(errno));
return 0;
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