gnu: libpaper: Update to 1.2.1.

* gnu/packages/ghostscript.scm (libpaper): Update to 1.2.1.
[source]: Switch to currently maintained fork.
[home-page]: Likewise.
[arguments]: Remove #:phases.  Add "--enable-relocatable" to #:configure-flags.
[native-inputs]: Remove AUTOMAKE.  Add HELP2MAN.
[outputs]: Add "debug".
* gnu/packages/tex.scm (texlive-bin)[arguments]: Add phase to patch test
expected test result with libpaper 1.2.
* gnu/packages/patches/libpaper-free-systempapername.patch,
gnu/packages/patches/libpaper-free-xdg-config-home.patch,
gnu/packages/patches/libpaper-invalid-paperspecs.patch: New files.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.

1 files changed, 37 insertions, 0 deletions

diff --git a/gnu/packages/patches/libpaper-free-xdg-config-home.patch b/gnu/packages/patches/libpaper-free-xdg-config-home.patch
new file mode 100644
index 0000000000..79c3d8173d
--- /dev/null
+++ b/gnu/packages/patches/libpaper-free-xdg-config-home.patch
@@ -0,0 +1,37 @@
+Free the xdg_config_home_variable only when needed.
+
+Taken from upstream:
+
+  https://github.com/rrthomas/libpaper/commit/29e3e3800cfea738f12a9760290b92d5c199092b
+
+diff --git a/lib/libpaper.c.in.in b/lib/libpaper.c.in.in
+index f7af1d7..aa86d06 100644
+--- a/lib/libpaper.c.in.in
++++ b/lib/libpaper.c.in.in
+@@ -295,7 +295,6 @@ const char *defaultpapername(void) {
+ 
+     const char *paperstr = getenv("PAPERSIZE");
+     if (paperstr == NULL && xdg_config_home != NULL) {
+-        free_xdg_config_home = true;
+         char *papersize = mfile_name_concat(xdg_config_home, PAPERSIZE_FILENAME, NULL);
+         if (papersize != NULL) {
+             paperstr = papernamefile(papersize);
+@@ -374,6 +373,7 @@ int paperinit(void)
+     xdg_config_home = getenv("XDG_CONFIG_HOME");
+     if (xdg_config_home == NULL) {
+         char *home = getenv("HOME");
++        free_xdg_config_home = true;
+         xdg_config_home = mfile_name_concat(home, ".config", NULL);
+         if (xdg_config_home == NULL)
+             return PAPER_NOMEM;
+@@ -409,8 +409,10 @@ int paperdone(void)
+ {
+     if (initialized) {
+         free(sysconfdir);
++        sysconfdir = NULL;
+         if (free_xdg_config_home)
+             free(xdg_config_home);
++        xdg_config_home = NULL;
+         initialized = false;
+     }
+     return PAPER_OK;