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RFC [PATCH] possible new feature: exit with an error status of 2 for ^X^
From: |
Benno Schulenberg |
Subject: |
RFC [PATCH] possible new feature: exit with an error status of 2 for ^X^Q and for ^O^Q |
Date: |
Mon, 27 May 2024 10:29:18 +0200 |
Normally, nano exits with a status of 0. But if the user wants to
make nano exit with an error status (to signal failure to a calling
program), they can now use ^X^Q (when the buffer is modified), or
^O^Q (when option --saveonexit is in effect).
This fulfills https://savannah.gnu.org/bugs/?65755.
Requested-by: Frank Wolff
---
src/files.c | 1 +
src/global.c | 3 +++
src/nano.c | 3 ++-
src/prompt.c | 6 ++++--
src/prototypes.h | 2 ++
5 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/src/files.c b/src/files.c
index fef47b27..c41340f3 100644
--- a/src/files.c
+++ b/src/files.c
@@ -2189,6 +2189,7 @@ int write_it_out(bool exiting, bool withprompt)
/* Upon request, abandon the buffer. */
if (function == discard_buffer) {
+ final_status = 2; /* ^O^Q makes nano exit with an
error. */
free(given);
return 2;
}
diff --git a/src/global.c b/src/global.c
index 9c6b1e66..38afb6a8 100644
--- a/src/global.c
+++ b/src/global.c
@@ -55,6 +55,9 @@ bool report_size = TRUE;
bool ran_a_tool = FALSE;
/* Whether a tool has been run at the Execute-Command prompt. */
+int final_status = 0;
+ /* The status value that nano returns upon exit. */
+
bool inhelp = FALSE;
/* Whether we are in the help viewer. */
char *title = NULL;
diff --git a/src/nano.c b/src/nano.c
index 123af18d..6640754a 100644
--- a/src/nano.c
+++ b/src/nano.c
@@ -260,7 +260,7 @@ void finish(void)
#endif
/* Get out. */
- exit(0);
+ exit(final_status);
}
/* Close the current buffer, and terminate nano if it is the only buffer. */
@@ -2652,6 +2652,7 @@ int main(int argc, char **argv)
wredrawln(midwin, editwinrows - 1, 1);
#endif
+ final_status = 0;
errno = 0;
focusing = TRUE;
diff --git a/src/prompt.c b/src/prompt.c
index d427d1ea..09571dd2 100644
--- a/src/prompt.c
+++ b/src/prompt.c
@@ -759,10 +759,12 @@ int ask_user(bool withall, const char *question)
#endif
/* Interpret ^N as "No", to allow exiting in anger, and ^Q or
^X too. */
else if (kbinput == '\x0E' || (kbinput == '\x11' &&
!ISSET(MODERN_BINDINGS)) ||
-
(kbinput == '\x18' && ISSET(MODERN_BINDINGS)))
+
(kbinput == '\x18' && ISSET(MODERN_BINDINGS))) {
choice = NO;
+ if (kbinput != '\x0E') /* ^X^Q makes nano exit with an
error. */
+ final_status = 2;
/* And interpret ^Y as "Yes". */
- else if (kbinput == '\x19')
+ } else if (kbinput == '\x19')
choice = YES;
#ifdef ENABLE_MOUSE
else if (kbinput == KEY_MOUSE) {
diff --git a/src/prototypes.h b/src/prototypes.h
index 55ab21c1..b6acbde7 100644
--- a/src/prototypes.h
+++ b/src/prototypes.h
@@ -39,6 +39,8 @@ extern bool more_than_one;
extern bool report_size;
extern bool ran_a_tool;
+extern int final_status;
+
extern bool inhelp;
extern char *title;
--
2.42.1
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