[PATCH] configure: consistent command -v usage

diff --git a/a4/b9245b96a26d17d70a8a2066e82b1e8a36fa93 b/a4/b9245b96a26d17d70a8a2066e82b1e8a36fa93
new file mode 100644 (file)
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--- /dev/null
+++ b/a4/b9245b96a26d17d70a8a2066e82b1e8a36fa93
@@ -0,0 +1,93 @@
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+From: Tomi Ollila <tomi.ollila@iki.fi>\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH] configure: consistent command -v usage\r
+Date: Wed, 18 Feb 2015 16:54:01 +0200\r
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+\r
+When the shell builtin `command -v` operates normally, it either\r
+prints the path of the arg given to it and returns zero -- or it\r
+returns nonzero and prints nothing.\r
+In abnormal situations something might be printed to stderr and\r
+in that case we want to know about it; therefore the used\r
+command -v stderr redirections to /dev/null have been removed.\r
+\r
+The `hash` (builtin) command in ksh returns zero even the arg\r
+given to is is not found in path. For that and for consistency\r
+the one appearance of it has been converted to `command -v`.\r
+---\r
+\r
+marked trivial\r
+\r
+ configure | 6 +++---\r
+ 1 file changed, 3 insertions(+), 3 deletions(-)\r
+\r
+diff --git a/configure b/configure\r
+index a6b49ae..4af7ba9 100755\r
+--- a/configure\r
++++ b/configure\r
+@@ -378,7 +378,7 @@ printf "Checking for python... "\r
+ have_python=0\r
+ \r
+ for name in python python2 python3; do\r
+-    if command -v $name > /dev/null 2>&1; then\r
++    if command -v $name > /dev/null; then\r
+       have_python=1\r
+       python=$name\r
+       printf "Yes ($name).\n"\r
+@@ -435,7 +435,7 @@ else\r
+ fi\r
+ \r
+ printf "Checking if doxygen is available... "\r
+-if command -v doxygen > /dev/null 2>&1; then\r
++if command -v doxygen > /dev/null; then\r
+     printf "Yes.\n"\r
+     have_doxygen=1\r
+ else\r
+@@ -444,7 +444,7 @@ else\r
+ fi\r
+ \r
+ printf "Checking if sphinx is available and supports nroff output... "\r
+-if hash sphinx-build > /dev/null 2>&1 && ${python} -m sphinx.writers.manpage > /dev/null 2>&1 ; then\r
++if command -v sphinx-build > /dev/null && ${python} -m sphinx.writers.manpage > /dev/null 2>&1 ; then\r
+     printf "Yes.\n"\r
+     have_sphinx=1\r
+ else\r
+-- \r
+1.9.1\r
+\r