diff options
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 33 |
1 files changed, 30 insertions, 3 deletions
@@ -40,6 +40,7 @@ #include "setup.h" #include "strmap.h" #include "ws.h" +#include "write-or-die.h" #ifdef NO_FAST_WORKING_DIRECTORY #define FAST_WORKING_DIRECTORY 0 @@ -4396,8 +4397,33 @@ static void run_external_diff(const char *pgm, diff_free_filespec_data(one); diff_free_filespec_data(two); cmd.use_shell = 1; - if (run_command(&cmd)) - die(_("external diff died, stopping at %s"), name); + if (o->flags.diff_from_contents) { + int got_output = 0; + cmd.out = -1; + if (start_command(&cmd)) + die(_("external diff died, stopping at %s"), name); + for (;;) { + char buffer[8192]; + ssize_t len = xread(cmd.out, buffer, sizeof(buffer)); + if (!len) + break; + if (len < 0) + die(_("unable to read from external diff," + " stopping at %s"), name); + got_output = 1; + if (write_in_full(1, buffer, len) < 0) + die(_("unable to write output of external diff," + " stopping at %s"), name); + } + close(cmd.out); + if (finish_command(&cmd)) + die(_("external diff died, stopping at %s"), name); + if (got_output) + o->found_changes = 1; + } else { + if (run_command(&cmd)) + die(_("external diff died, stopping at %s"), name); + } remove_tempfile(); } @@ -4844,6 +4870,7 @@ void diff_setup_done(struct diff_options *options) */ if ((options->xdl_opts & XDF_WHITESPACE_FLAGS) || + options->flags.exit_with_status || options->ignore_regex_nr) options->flags.diff_from_contents = 1; else @@ -6732,7 +6759,7 @@ void diff_flush(struct diff_options *options) if (output_format & DIFF_FORMAT_CALLBACK) options->format_callback(q, options, options->format_callback_data); - if (output_format & DIFF_FORMAT_NO_OUTPUT && + if ((!output_format || output_format & DIFF_FORMAT_NO_OUTPUT) && options->flags.exit_with_status && options->flags.diff_from_contents) { /* |