[PATCH] man[13]/*: ffix: change '--' to '\-\-' (options) or '\(em' (em-dash)

[Bjarni Ingi Gislason <bjarniig@rhi.hi.is>]

  Change '--' to '\-\-' for options and '--' between words to '\(em'
(em-dash).

Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
---
 man1/memusagestat.1 | 2 +-
 man3/dlsym.3        | 2 +-
 man3/posix_spawn.3  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/man1/memusagestat.1 b/man1/memusagestat.1
index a1c40cd86..809f4ba3e 100644
--- a/man1/memusagestat.1
+++ b/man1/memusagestat.1
@@ -33,7 +33,7 @@ memory profiling data in the file
 that file is generated via the
 .I \-d
 (or
-.IR --data )
+.IR \-\-data )
 option of
 .BR memusage (1).
 .PP
diff --git a/man3/dlsym.3 b/man3/dlsym.3
index 2abb0b1d0..58519b5d8 100644
--- a/man3/dlsym.3
+++ b/man3/dlsym.3
@@ -145,7 +145,7 @@ function is a GNU extension.
 There are several scenarios when the address of a global symbol is NULL.
 For example, a symbol can be placed at zero address by the linker, via
 a linker script or with
-.I --defsym
+.I \-\-defsym
 command-line option. Undefined weak symbols also have NULL value.
 Finally, the symbol value may be the result of
 a GNU indirect function (IFUNC) resolver function that returns
diff --git a/man3/posix_spawn.3 b/man3/posix_spawn.3
index f425a39e3..cb7faabcc 100644
--- a/man3/posix_spawn.3
+++ b/man3/posix_spawn.3
@@ -429,7 +429,7 @@ If
 .I file_actions
 is NULL, then no special action is taken, and standard
 .BR exec (3)
-semantics apply--file descriptors open before the exec
+semantics apply\(emfile descriptors open before the exec
 remain open in the new process,
 except those for which the
 .B FD_CLOEXEC
-- 
2.27.0