[PATCH] startup: add support for <file>:<line> format

From ec36727bc31eb630c19794817f274a6183117ea6 Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <[email protected]>
Date: Sun, 29 Jan 2023 23:43:00 +0100
Subject: [PATCH] startup: add support for <file>:<line> format

Many tools will output files with line numbers in the format <file>:<line>:<column>.
Support this format in addition to the +<line>,<column> format when opening files.
---
 src/nano.c  | 26 ++++++++++++++++++++++++--
 src/utils.c |  2 +-
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/src/nano.c b/src/nano.c
index c6db6dd3..86bcc7cb 100644
--- a/src/nano.c
+++ b/src/nano.c
@@ -2482,8 +2482,30 @@ int main(int argc, char **argv)
 				continue;
 		} else
 #endif
-		 if (!open_buffer(argv[optind++], TRUE))
-			continue;
+		{
+			char *filename = argv[optind++];
+
+			/* search for : to open file on a specific line , ignore if filename starts with : */
+			char *colon = filename;
+			while ((colon = strchr(colon, ':')) && colon != filename) {
+
+				/* If : is escaped with \, unescape it and search for the next occurrence */
+				if (*(colon - 1) == '\\') {
+					size_t len = strlen(colon);
+					memmove(colon - 1, colon, len);
+					colon[len - 1] = 0;
+					continue;
+				}
+
+				/* if parsing succeeds, cut of the line suffix */
+				if (parse_line_column(colon + 1, &givenline, &givencol))
+					*colon = 0;
+				break;
+			}
+
+			if (!open_buffer(filename, TRUE))
+				continue;
+		}
 
 		/* If a position was given on the command line, go there. */
 		if (givenline != 0 || givencol != 0)
diff --git a/src/utils.c b/src/utils.c
index 18c6e35c..3be197e2 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -137,7 +137,7 @@ bool parse_line_column(const char *str, ssize_t *line, ssize_t *column)
 	while (*str == ' ')
 		str++;
 
-	comma = strpbrk(str, "m,. /;");
+	comma = strpbrk(str, "m,. /;:");
 
 	if (comma == NULL)
 		return parse_num(str, line);
-- 
2.37.2