fixup! readtags: add an optoin (-X) for emitting an aggregate tag file

Author: masatake

extra-cmds/readtags-cmd.c

@@ -24,7 +24,6 @@
 #include <stdio.h>		/* stderr */
 #include <stdbool.h>
 
-#include <unistd.h>
 
 typedef struct sReadOption {
 	bool sortOverride;
@@ -784,21 +783,14 @@ static void printMustPseudoTag(tagPrintOptions *opts, FILE *fp,
 
 static void printMustPseudoTags(tagPrintOptions *opts, FILE *fp)
 {
-	char buf[PATH_MAX];
-	if (!getcwd(buf, sizeof(buf)))
-	{
-		fprintf(stderr, "Failed to get the current working directory\n");
-		exit (1);
-	}
-
 	printMustPseudoTag(opts, fp, "!_TAG_FILE_FORMAT",	"2",	"//");
 	printMustPseudoTag(opts, fp, "!_TAG_FILE_SORTED",	"1",	"//");
 	printMustPseudoTag(opts, fp, "!_TAG_OUTPUT_EXCMD",	"pattern", "//");
 	printMustPseudoTag(opts, fp, "!_TAG_OUTPUT_FILESEP", "slash",	"//");
 	printMustPseudoTag(opts, fp, "!_TAG_OUTPUT_MODE",	"u-ctags", "//");
 	printMustPseudoTag(opts, fp, "!_TAG_OUTPUT_VERSION", "0.0", "/current.age/");
 	printMustPseudoTag(opts, fp, "!_TAG_PATTERN_LENGTH_LIMIT", "0", "//");
-	printMustPseudoTag(opts, fp, "!_TAG_PROC_CWD", buf, "//");
+	printMustPseudoTag(opts, fp, "!_TAG_PROC_CWD", CurrentDirectory, "//");
 	printMustPseudoTag(opts, fp, "!_TAG_PROGRAM_AUTHOR", "Universal Ctags Team", "//");
 	printMustPseudoTag(opts, fp, "!_TAG_PROGRAM_NAME", "readtags",	"/with -X option/");
 	printMustPseudoTag(opts, fp, "!_TAG_PROGRAM_URL", "https://ctags.io/", "/official site/");
@@ -1124,6 +1116,9 @@ extern int main (int argc, char **argv)
 	if (actionSpec.action & ACTION_AGGREGATE)
 	{
 		tagEntry e;
+
+		setCurrentDirectory ();
+
 		for (unsigned int i = 0; i < ptrArrayCount (inputSpecs); i++)
 		{
 			struct inputSpec *inputSpec = ptrArrayItem (inputSpecs, i);